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All questions of Respiration in Plants for NEET Exam
In plants, the gaseous exchange take place in
a) Stomata
b) Roots
c) Stems
d) Lenticles- a)a and b
- b)a and d
- c)b and d
- d)b and c
Correct answer is option 'B'. Can you explain this answer?
In plants, the gaseous exchange take place in
a) Stomata
b) Roots
c) Stems
d) Lenticles
a) Stomata
b) Roots
c) Stems
d) Lenticles
a)
a and b
b)
a and d
c)
b and d
d)
b and c
|
Geetika Shah answered |
Plants unlike animals have no special systems for breathing or gaseous exchange. Stomata and lenticels allow gaseous exchange by diffusion.
Which of the following is not correct about the Krebs cycle?
- a)It starts with a six-carbon compound.
- b)It occurs in mitochondria.
- c)It is also called the citric acid cycle.
- d)The intermediate compound which links glycolysis with the Krebs cycle is malic acid.
Correct answer is option 'D'. Can you explain this answer?
Which of the following is not correct about the Krebs cycle?
a)
It starts with a six-carbon compound.
b)
It occurs in mitochondria.
c)
It is also called the citric acid cycle.
d)
The intermediate compound which links glycolysis with the Krebs cycle is malic acid.
|
Om Desai answered |
- Krebs cycle is also known as the citric acid cycle because this reaction starts with the six-carbon compound which is citric acid. It occurs in the mitochondrial matrix.
- Krebs cycle is a closed-loop cycle. And each loop of the cycle generates a molecule of ATP. This cycle consists of eight steps which include redox, dehydration, hydration, and decarboxylation reactions. It is an aerobic pathway because NADH is produced and the electrons released are used up in the next cycle which uses oxygen.
- The process of the cycle starts with the condensation of acetyl- CoA with oxaloacetate.
- This reaction is controlled by the amount of ATP present.
- If the ATP level increases then the rate of the reaction decreases and vice versa. After glycolysis, the pyruvate is then converted into acetyl CoA which enters the citric acid cycle.
- The Krebs cycle is the pathway that all organisms use to generate energy. The intermediate compound that links pyruvate to the Krebs cycle is Acetyl CoA.
- So, the answer is option (B) ‘the intermediate compound which links glycolysis with the Krebs cycle is malic acid’.
How many netATP are produced in Glycolysis?- a)36 ATP
- b)8 ATP
- c)2 ATP
- d)16 ATP
Correct answer is option 'C'. Can you explain this answer?
How many netATP are produced in Glycolysis?
a)
36 ATP
b)
8 ATP
c)
2 ATP
d)
16 ATP
|
Ruchi Chopra answered |
At the end of glycolysis pathway, 2 net ATP molecules at step 6 and step 9 are produced.
The respiratory quotient depends upon:
- a)Respiratory products
- b)respiratory substrates
- c)ATP
- d)NADH
Correct answer is option 'B'. Can you explain this answer?
The respiratory quotient depends upon:
a)
Respiratory products
b)
respiratory substrates
c)
ATP
d)
NADH
|
Shounak Nair answered |
The respiratory quotient depends upon the type of respiratory substrate used during respiration.
F0−F1 particles participate in the synthesis of- a)NADPH
- b)FADH2
- c)ADP
- d)ATP
Correct answer is option 'D'. Can you explain this answer?
F0−F1 particles participate in the synthesis of
a)
NADPH
b)
FADH2
c)
ADP
d)
ATP
|
Lalit Yadav answered |
- Oxysomes refer to small round structures present within the folds of the cristae of the inner mitochondrial membrane. It is also known as F0-F1 particles.
- F0 and F1 particles are found in the inner mitochondrial region and are attached to the cristae and help in ATP production and oxidation.
In Kreb cycle conversion of succinyl-CoA to succinic acid by- a)GTP
- b)ATP
- c)ADP
- d)GDP
Correct answer is option 'A'. Can you explain this answer?
In Kreb cycle conversion of succinyl-CoA to succinic acid by
a)
GTP
b)
ATP
c)
ADP
d)
GDP
|
Anjana Dasgupta answered |
During conversion of succinyl-CoA to succinic acid a molecule of GTP is synthesised.
The TCA cycle is named after- a)Robert Emerson
- b)Melvin Calvin
- c)Embden
- d)Hans Krebs
Correct answer is option 'D'. Can you explain this answer?
The TCA cycle is named after
a)
Robert Emerson
b)
Melvin Calvin
c)
Embden
d)
Hans Krebs
|
|
Hitakshi Tamta answered |
*Tricarboxylic acid (TCA) cycle is a series of enzyme-catalyzed chemical reactions used by all aerobic organisms to release the stored energy........ *It is a part of cellular respiration........ *It is also called as citric acid cycle or Krebs cycles which is named after it's discoverer Hans Krebs..... Thus, the correct answer is option 'D'.
During anaerobic respiration less energy is produced than aerobic respiration because- a)Incomplete oxidation of glucose takes place
- b)It takes place is micrograms
- c)It takes place in inert medium
- d)Glucose is not available
Correct answer is option 'A'. Can you explain this answer?
During anaerobic respiration less energy is produced than aerobic respiration because
a)
Incomplete oxidation of glucose takes place
b)
It takes place is micrograms
c)
It takes place in inert medium
d)
Glucose is not available
|
|
Kuldeep Kuldeep answered |
Option a is correct. Because, in Anaerobic Respiration, respiration takes place on the absence of oxygen. Iteans, the oxidation of pyruvate takes place in the absence of oxygen to release CO2, Ethanol along with the release of Energy. Here, in Anaerobic Respiration, Water is not yet released due to the absence of oxygen. So, there will be incomplete oxidation of glucose takes place.
Most of the enzymes of the TCA cycle are present in- a)Intermembrane space of mitochondria
- b)Mitochondrial matrix
- c)Inner membrane of mitochondria
- d)Cytoplasm
Correct answer is option 'B'. Can you explain this answer?
Most of the enzymes of the TCA cycle are present in
a)
Intermembrane space of mitochondria
b)
Mitochondrial matrix
c)
Inner membrane of mitochondria
d)
Cytoplasm
|
Anjali Iyer answered |
Mitochondrial matrix.
In the mitochondrion, the matrix is the space within the inner membrane. ... The enzymes in the matrix facilitate reactions responsible for the production of ATP, such as the citric acid cycle, oxidative phosphorylation, oxidation of pyruvate and the beta oxidation of fatty acids.
In the mitochondrion, the matrix is the space within the inner membrane. ... The enzymes in the matrix facilitate reactions responsible for the production of ATP, such as the citric acid cycle, oxidative phosphorylation, oxidation of pyruvate and the beta oxidation of fatty acids.
End product of glycolysis is [1990]- a)acetyl CoA
- b)pyruvic Acid
- c)glucose 1-phosphate
- d)fructose 1-phosphate
Correct answer is option 'B'. Can you explain this answer?
End product of glycolysis is [1990]
a)
acetyl CoA
b)
pyruvic Acid
c)
glucose 1-phosphate
d)
fructose 1-phosphate
|
Shivani Tiwari answered |
Pyruvic acid is formed as an end product of glycolysis, a process that breaks down glucose (a six-carbon molecule) into two molecules of pyruvate (a three-carbon molecule) and simultaneously yields a small net gain of the universal energy storage molecule adenosine triphosphate (ATP), used to power cellular function.
When fats are the respiratory substrate, the value of RQ would be- a)Approx. 0.7
- b)Approx. 1.0
- c)More than 1.0
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
When fats are the respiratory substrate, the value of RQ would be
a)
Approx. 0.7
b)
Approx. 1.0
c)
More than 1.0
d)
None of the above
|
|
Surbhi Mishra answered |
Ans.
The respiratory quotient (or RQ or respiratory coefficient), is a dimensionless number used in calculations of basal metabolic rate (BMR) when estimated from carbon dioxide production. ... If metabolism consists solely of lipids, the Respiratory Quotient is 0.7, for proteins it is 0.8, and for carbohydrates it is 1.0.
Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is known as[1988]- a)TCA-pathway
- b)glycolysis
- c)HMS-pathway
- d)Krebs cycle
Correct answer is option 'B'. Can you explain this answer?
Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is known as[1988]
a)
TCA-pathway
b)
glycolysis
c)
HMS-pathway
d)
Krebs cycle
|
Maheshwar Saini answered |
Glycolysis involves the process of partial oxidation of glucose or similar hexose sugar into two molecules of pyruvic acid through a series of ten enzyme mediated reactions. It occurs in cytoplasm.
Mitochondria are called the powerhouses of the cell. Which of the following observations support this statement?- a)Mitochondria are found in almost all plant and animal cells.
- b)The enzymes of the Krebs cycle and the cytochromes are found in mitochondria.
- c)Mitochondria synthesise ATP.
- d)Mitochondria have a double membrane.
Correct answer is option 'C'. Can you explain this answer?
Mitochondria are called the powerhouses of the cell. Which of the following observations support this statement?
a)
Mitochondria are found in almost all plant and animal cells.
b)
The enzymes of the Krebs cycle and the cytochromes are found in mitochondria.
c)
Mitochondria synthesise ATP.
d)
Mitochondria have a double membrane.
|
Riya Banerjee answered |
Mitochondria (singular - Mitochondrion) are known as the powerhouse of the cell because they are responsible for the release of energy from food ,i.e, cellular respiration. This energy is released in the form of ATP (adenosine triphosphate), the energy currency of the cell.
While the cells release 2 ATP, mitochondria releases 34 ATP which adds up to 36 ATP. Since a major portion of the ATP is released by mitochondria, they are called the powerhouse of the cell.
During which stage in the complete oxidation of glucose is the greatest number of ATP formed from ADP?- a)Glycolysis
- b)Electron transport chain
- c)During conversion of pyruvic acid to Acetyl Co A
- d)Krebs cycle
Correct answer is option 'B'. Can you explain this answer?
During which stage in the complete oxidation of glucose is the greatest number of ATP formed from ADP?
a)
Glycolysis
b)
Electron transport chain
c)
During conversion of pyruvic acid to Acetyl Co A
d)
Krebs cycle
|
Krish Khanna answered |
During electron transport chain stage of respiration of complete oxidation of glucose greatest number of ATP is formed from ADP in inner wall of mitochondria.
Out of 38 ATP molecules produced per glucose, 32 ATP molecules are formed from NADH/FADH2 in [1993]- a)respiratory chain
- b)Krebs cycle
- c)oxidative decarboxylation
- d)EMP
Correct answer is option 'A'. Can you explain this answer?
Out of 38 ATP molecules produced per glucose, 32 ATP molecules are formed from NADH/FADH2 in [1993]
a)
respiratory chain
b)
Krebs cycle
c)
oxidative decarboxylation
d)
EMP
|
|
Anjali Iyer answered |
The electron transport chain along with oxidative phosphorylation involves the synthesis of energy-rich ATP molecules with the help of energy released during the oxidation of reduced coenzymes (NADH2 and FADH2) formed during glycolysis and the Krebs cycle. A total of 10 NADH2 and 2 FADH2 molecules are produced during aerobic respiration. They help in the formation of 32 ATP molecules.
Oxidative phosphorylation is production of- a)ATP in photosynthesis [1992]
- b)NADPH in photosynthesis
- c)ATP in respiration
- d)NADH in respiration
Correct answer is option 'B'. Can you explain this answer?
Oxidative phosphorylation is production of
a)
ATP in photosynthesis [1992]
b)
NADPH in photosynthesis
c)
ATP in respiration
d)
NADH in respiration
|
Ashish Tiwari answered |
Overview: oxidative phosphorylation
The electron transport chain is a series of proteins and organic molecules found in the inner membrane of the mitochondria. Electrons are passed from one member of the transport chain to another in a series of redox reactions. Energy released in these reactions is captured as a proton gradient, which is then used to make ATP in a process called chemiosmosis. Together, the electron transport chain and chemiosmosis make up oxidative phosphorylation. The key steps of this process, shown in simplified form in the diagram above.
Fermentation products of Yeast are [1994, 97]- a)H2O + CO2
- b)methyl alcohol + CO2
- c)methyl alcohol + Water
- d)ethyl alcohol + CO2
Correct answer is option 'D'. Can you explain this answer?
Fermentation products of Yeast are [1994, 97]
a)
H2O + CO2
b)
methyl alcohol + CO2
c)
methyl alcohol + Water
d)
ethyl alcohol + CO2
|
Abhijeet Goyal answered |
End products of fermentation are ethyl alcohol, lactic acid and CO2.
Terminal cytochrome of respiratory chain which donates electrons to oxygen is [1992]- a)Cyt. b
- b)Cyt. c
- c)Cyt. a1
- d)Cyt. a3
Correct answer is option 'D'. Can you explain this answer?
Terminal cytochrome of respiratory chain which donates electrons to oxygen is [1992]
a)
Cyt. b
b)
Cyt. c
c)
Cyt. a1
d)
Cyt. a3
|
Dipanjan Mehta answered |
Terminal cytochorome is cyt a3. cyt a3 posseses two copper centers. It helps in transfer of electrons to oxygen.
Life without air would be [1993]- a)reductional
- b)free from oxidative damage
- c)impossible
- d)anaerobic
Correct answer is option 'D'. Can you explain this answer?
Life without air would be [1993]
a)
reductional
b)
free from oxidative damage
c)
impossible
d)
anaerobic
|
Rajat Rai answered |
Air means O2 here;Actually when we talk abt Aerobic or Anaerobic process we talk in context with intracellular rxns,We need O2 for breakdown of food hence We are Aerobic whereas those organisms which Breakdown their food By means of anything but not O2 are anaerobes! This is wht Comes into my mind when I hear these terms!
When one glucose molecule is completely oxidised, it changes [1992]- a)36 ADP molecules into 36 ATP molecules
- b)38 ADP molecules into 38 ATP molecules
- c)30 ADP molecules into 30 ATP molecules
- d)32 ADP molecules into 32 ATP molecules
Correct answer is option 'B'. Can you explain this answer?
When one glucose molecule is completely oxidised, it changes [1992]
a)
36 ADP molecules into 36 ATP molecules
b)
38 ADP molecules into 38 ATP molecules
c)
30 ADP molecules into 30 ATP molecules
d)
32 ADP molecules into 32 ATP molecules
|
Ayush Chavan answered |
Historically it was believed that 38 ATP is produced from 38 ADP. But the current estimate is that about 30 molecules of ATP are formed when glucose is completely oxidised to CO2
Pyruvic acid, the key product of glycolysis, can have many metabolic fates. Under aerobic conditions, it forms- a)CO2
- b)CO2+ H2O
- c)Lactic acid
- d)Acetyl CoA + CO2
Correct answer is option 'D'. Can you explain this answer?
Pyruvic acid, the key product of glycolysis, can have many metabolic fates. Under aerobic conditions, it forms
a)
CO2
b)
CO2+ H2O
c)
Lactic acid
d)
Acetyl CoA + CO2
|
|
Rohit Shah answered |
Pyruvate, the product obtained through glycolysis, gets oxidised with the loss of its carboxy group as CO2, to give acetyl Co-A, under aerobic condition. This acetyl Co-A is further oxidised completely to CO2 + H2O in citric acid cycle. Other options are incorrect as Lactic acid is formed in muscles under anaerobic conditions. Ethanol and CO2 are products of anaerobic respiration in yeast cells. CO2 and H2O are final and complete reaction products released at the end of cellular respiration.
The TCA cycle starts with- a)Condensation
- b)Dehydrogenation
- c)Phosphorylation
- d)Decarboxylation
Correct answer is option 'A'. Can you explain this answer?
The TCA cycle starts with
a)
Condensation
b)
Dehydrogenation
c)
Phosphorylation
d)
Decarboxylation
|
Anand Jain answered |
The TCA cycle starts with the condensation of acetyl group with oxaloacetic acid (OAA) and water to yield citric acid.
Maximum amount of energy/ATP is liberated on oxidation of [1994]- a)fats
- b)proteins
- c)starch
- d)vitamins
Correct answer is option 'A'. Can you explain this answer?
Maximum amount of energy/ATP is liberated on oxidation of [1994]
a)
fats
b)
proteins
c)
starch
d)
vitamins
|
Deepak Joshi answered |
Fats are used as respiratory substrates by a number of organisms because they contain more energy as compared to carbohydrates.
The overall goal of glycolysis, Krebs cycle and electron transport system is the formation of- a)Nucleic acids
- b)ATP in small stepwise units
- c)ATP in one large oxidation reaction
- d)Sugars
Correct answer is option 'B'. Can you explain this answer?
The overall goal of glycolysis, Krebs cycle and electron transport system is the formation of
a)
Nucleic acids
b)
ATP in small stepwise units
c)
ATP in one large oxidation reaction
d)
Sugars
|
Ciel Knowledge answered |
The overall goal of glycolysis, Krebs cycle and electron transport system is the formation of ATP step-wise. The three processes are involved in cellular respiration of food to produce energy, which will be used for various cellular activities.
Respiratory substrate yielding maximum number of ATP molecule is [1994]- a)ketogenic amino acids
- b)glucose
- c)amylose
- d)glycogen
Correct answer is option 'B'. Can you explain this answer?
Respiratory substrate yielding maximum number of ATP molecule is [1994]
a)
ketogenic amino acids
b)
glucose
c)
amylose
d)
glycogen
|
Arya Khanna answered |
Respiratory substrate yielding maximum number of ATP molecules is glucose. One glucose molecule on aerobic respiration yields 36 ATP molecules.
The enzyme that interconnects the glycolysis and kreb cycle is- a)Oxalo acetic acid
- b)NADH
- c)Acetyl-CoA
- d)NADP
Correct answer is option 'C'. Can you explain this answer?
The enzyme that interconnects the glycolysis and kreb cycle is
a)
Oxalo acetic acid
b)
NADH
c)
Acetyl-CoA
d)
NADP
|
Ashutosh Nambiar answered |
Explanation:
The interconnection between glycolysis and the Krebs cycle occurs through the conversion of pyruvate to Acetyl-CoA.
Glycolysis:
Glycolysis is the process of breaking down glucose into pyruvate. It occurs in the cytoplasm of the cell and yields two molecules of ATP along with two molecules of NADH.
Krebs Cycle:
The Krebs cycle, also known as the citric acid cycle, occurs in the mitochondria of the cell. It involves the oxidation of Acetyl-CoA to produce energy in the form of ATP, NADH, and FADH2.
Interconnection:
The interconnection between glycolysis and the Krebs cycle occurs through the conversion of pyruvate to Acetyl-CoA. Pyruvate is transported from the cytoplasm to the mitochondria, where it is converted to Acetyl-CoA by the enzyme pyruvate dehydrogenase.
Acetyl-CoA is then used in the Krebs cycle to produce energy in the form of ATP, NADH, and FADH2. The Krebs cycle produces NADH, which is used in the electron transport chain to produce more ATP.
Therefore, Acetyl-CoA is the enzyme that interconnects glycolysis and the Krebs cycle.
The interconnection between glycolysis and the Krebs cycle occurs through the conversion of pyruvate to Acetyl-CoA.
Glycolysis:
Glycolysis is the process of breaking down glucose into pyruvate. It occurs in the cytoplasm of the cell and yields two molecules of ATP along with two molecules of NADH.
Krebs Cycle:
The Krebs cycle, also known as the citric acid cycle, occurs in the mitochondria of the cell. It involves the oxidation of Acetyl-CoA to produce energy in the form of ATP, NADH, and FADH2.
Interconnection:
The interconnection between glycolysis and the Krebs cycle occurs through the conversion of pyruvate to Acetyl-CoA. Pyruvate is transported from the cytoplasm to the mitochondria, where it is converted to Acetyl-CoA by the enzyme pyruvate dehydrogenase.
Acetyl-CoA is then used in the Krebs cycle to produce energy in the form of ATP, NADH, and FADH2. The Krebs cycle produces NADH, which is used in the electron transport chain to produce more ATP.
Therefore, Acetyl-CoA is the enzyme that interconnects glycolysis and the Krebs cycle.
Choose the correct statement.- a)There is a complete breakdown of glucose during fermentation.
- b)Pyruvate is formed in the mitochondrial matrix.
- c)During the conversion of succinyl CoA to succinic acid, a molecule of ATP is synthesised.
- d)Oxygen is vital in respiration for the removal of hydrogen.
Correct answer is option 'D'. Can you explain this answer?
Choose the correct statement.
a)
There is a complete breakdown of glucose during fermentation.
b)
Pyruvate is formed in the mitochondrial matrix.
c)
During the conversion of succinyl CoA to succinic acid, a molecule of ATP is synthesised.
d)
Oxygen is vital in respiration for the removal of hydrogen.
|
Hansa Sharma answered |
- Oxygen sits at the end of the electron transport chain, where it accepts electrons, hydrogen and picks up protons to form water.
- Pyruvate is formed in the cytoplasm.
- During fermentation glucose is partially broken down by glycolysis.
- During the conversion of succinyl CoA to succinic acid a molecule of GTP is synthesized.
So, the correct option is 'Oxygen is vital in respiration for removal of hydrogen'.
In which of the following do the two names refer to one and the same thing?- a)Krebs cycle and Calvin cycle
- b)Citric acid cycle and Calvin cycle
- c)Tricarboxylic acid cycle and citric acid cycle
- d)Tricarboxylic acid cycle and urea cycle
Correct answer is option 'C'. Can you explain this answer?
In which of the following do the two names refer to one and the same thing?
a)
Krebs cycle and Calvin cycle
b)
Citric acid cycle and Calvin cycle
c)
Tricarboxylic acid cycle and citric acid cycle
d)
Tricarboxylic acid cycle and urea cycle
|
Akash Saini answered |
Explanation:
The correct answer is option C, which states that the tricarboxylic acid cycle and the citric acid cycle refer to the same thing. Let's understand why this is the correct answer.
Tricarboxylic Acid Cycle:
The tricarboxylic acid (TCA) cycle, also known as the citric acid cycle or Krebs cycle, is a series of chemical reactions that occur in the mitochondria of eukaryotic cells. It is an essential metabolic pathway that plays a key role in the oxidation of carbohydrates, fats, and proteins to generate energy in the form of ATP.
Citric Acid Cycle:
The citric acid cycle, as the name suggests, is named after citric acid. It is a series of chemical reactions that take place in the mitochondria of cells. The cycle starts with the condensation of acetyl-CoA and oxaloacetate to form citrate, which is then metabolized through a series of enzymatic reactions to regenerate oxaloacetate.
Tricarboxylic Acid Cycle = Citric Acid Cycle:
The tricarboxylic acid cycle and the citric acid cycle refer to the same metabolic pathway. The cycle was initially named after its intermediate product, citric acid, and later came to be known as the tricarboxylic acid cycle due to the presence of three carboxylic acid groups in the cycle.
Conclusion:
Hence, the correct answer is option C, where the tricarboxylic acid cycle and the citric acid cycle refer to the same thing. The other options, including the Krebs cycle and Calvin cycle, the citric acid cycle and Calvin cycle, and the tricarboxylic acid cycle and urea cycle, are incorrect as they refer to different metabolic pathways or processes.
The correct answer is option C, which states that the tricarboxylic acid cycle and the citric acid cycle refer to the same thing. Let's understand why this is the correct answer.
Tricarboxylic Acid Cycle:
The tricarboxylic acid (TCA) cycle, also known as the citric acid cycle or Krebs cycle, is a series of chemical reactions that occur in the mitochondria of eukaryotic cells. It is an essential metabolic pathway that plays a key role in the oxidation of carbohydrates, fats, and proteins to generate energy in the form of ATP.
Citric Acid Cycle:
The citric acid cycle, as the name suggests, is named after citric acid. It is a series of chemical reactions that take place in the mitochondria of cells. The cycle starts with the condensation of acetyl-CoA and oxaloacetate to form citrate, which is then metabolized through a series of enzymatic reactions to regenerate oxaloacetate.
Tricarboxylic Acid Cycle = Citric Acid Cycle:
The tricarboxylic acid cycle and the citric acid cycle refer to the same metabolic pathway. The cycle was initially named after its intermediate product, citric acid, and later came to be known as the tricarboxylic acid cycle due to the presence of three carboxylic acid groups in the cycle.
Conclusion:
Hence, the correct answer is option C, where the tricarboxylic acid cycle and the citric acid cycle refer to the same thing. The other options, including the Krebs cycle and Calvin cycle, the citric acid cycle and Calvin cycle, and the tricarboxylic acid cycle and urea cycle, are incorrect as they refer to different metabolic pathways or processes.
End products of aerobic respiration are [1992]- a)sugar and oxygen
- b)water and energy
- c)carbon dioxide, water and energy
- d)carbon dioxide and energy
Correct answer is option 'C'. Can you explain this answer?
End products of aerobic respiration are [1992]
a)
sugar and oxygen
b)
water and energy
c)
carbon dioxide, water and energy
d)
carbon dioxide and energy
|
Surbhi Das answered |
The end products of aerobic respiration are 38 atp of energy, carbon dioxide and water while of anaerobic respiration is ethanol and 2atp of energy.
End product of citric acid/Krebs cycle is [1993]- a)citric acid
- b)lactic acid
- c)pyruvic acid
- d)CO2 + H2O
Correct answer is option 'D'. Can you explain this answer?
End product of citric acid/Krebs cycle is [1993]
a)
citric acid
b)
lactic acid
c)
pyruvic acid
d)
CO2 + H2O
|
Shivani Rane answered |
The end product of glycolysis is pyruvic acid whereas acetyl CoA is the connecting link between glycolysis and Krebs' cycle. The TCA cycle was first described by Krebs, 1937 as a cyclic process in which acetyl coA is oxidised to CO2 and water. Acetyl CoA combines with oxalo acetic acid to form citric acid. After a series of cyclic reactions OAA is recycled back.
Which process makes direct use of oxygen- a)Fermentation
- b)Electron transport
- c)Glycolysis
- d)Krebs cycle
Correct answer is option 'B'. Can you explain this answer?
Which process makes direct use of oxygen
a)
Fermentation
b)
Electron transport
c)
Glycolysis
d)
Krebs cycle
|
|
Anand Jain answered |
Electron transport process makes direct use of oxygen to produce ATP molecules in respiration process.
R.Q is less than unity in case of- a)Protein
- b)Organic acid
- c)Carbohydrates
- d)Starch
Correct answer is option 'A'. Can you explain this answer?
R.Q is less than unity in case of
a)
Protein
b)
Organic acid
c)
Carbohydrates
d)
Starch
|
Prashanth Dasgupta answered |
Respiratory quotient is the ratio of number of carbon dioxide molecules to the number of oxygen molecules during respiration. R.Q is less than one in case of protein
Arrange the following in descending order based upon number of carbon atoms in Kreb cycle
a) α-ketoglutaric acid
b) citric acid
c) Acetyl coA
d) Succinic acid- a)b, a, d, c
- b)a, d, b, c
- c)a, b, c, d
- d)b, c, d, a
Correct answer is option 'A'. Can you explain this answer?
Arrange the following in descending order based upon number of carbon atoms in Kreb cycle
a) α-ketoglutaric acid
b) citric acid
c) Acetyl coA
d) Succinic acid
a) α-ketoglutaric acid
b) citric acid
c) Acetyl coA
d) Succinic acid
a)
b, a, d, c
b)
a, d, b, c
c)
a, b, c, d
d)
b, c, d, a
|
Shruti Chauhan answered |
In kerb cycle citric acid consists of 6C atoms ,α-ketoglutaric acid consist of 5C atoms, succinic acid consists of 4 C atoms and Acetyl co A consists of 2C atoms,
EMP can produce a total of [1990]- a)6 ATP
- b)8 ATP
- c)24 ATP
- d)38 ATP
Correct answer is option 'B'. Can you explain this answer?
EMP can produce a total of [1990]
a)
6 ATP
b)
8 ATP
c)
24 ATP
d)
38 ATP
|
Anu Bajaj answered |
The net gain of energy is equal to 8 ATP in EMP pathway.
Which compound consists of 5 carbon atoms?- a)Oxalo acetic acid
- b)Malic acid
- c)Citric acid
- d)α –Ketoglutaric acid
Correct answer is option 'D'. Can you explain this answer?
Which compound consists of 5 carbon atoms?
a)
Oxalo acetic acid
b)
Malic acid
c)
Citric acid
d)
α –Ketoglutaric acid
|
|
Prashanth Dasgupta answered |
In kreb cycle only one compound consists of 5 carbon atoms it is α –Ketoglutaric acid .
What is the total ATP gain during glycolysis from one molecule of glucose?- a)2 ATP
- b)4 ATP
- c)6 ATP
- d)8 ATP
Correct answer is option 'A'. Can you explain this answer?
a)
2 ATP
b)
4 ATP
c)
6 ATP
d)
8 ATP
|
Simran Dey answered |
Overview of Glycolysis
Glycolysis is the metabolic pathway that converts glucose into pyruvate, producing energy in the form of ATP and NADH. This process occurs in the cytoplasm and does not require oxygen.
Total ATP Gain
The total ATP gain during glycolysis from one molecule of glucose can be understood by analyzing both the production and consumption of ATP:
ATP Production
- Substrate-level Phosphorylation: Glycolysis produces ATP through substrate-level phosphorylation.
- Net Gain: For each glucose molecule, glycolysis generates 4 ATP molecules. However, 2 ATP molecules are consumed in the initial phosphorylation steps.
Calculation of Net ATP
- ATP Produced: 4 ATP (from 2 molecules of 1,3-bisphosphoglycerate)
- ATP Consumed: 2 ATP (in the energy investment phase)
- Net Gain:
- 4 ATP produced - 2 ATP consumed = 2 ATP net gain
Conclusion
Therefore, the correct answer to the total ATP gain during glycolysis from one molecule of glucose is:
- Option A: 2 ATP
Glycolysis is the metabolic pathway that converts glucose into pyruvate, producing energy in the form of ATP and NADH. This process occurs in the cytoplasm and does not require oxygen.
Total ATP Gain
The total ATP gain during glycolysis from one molecule of glucose can be understood by analyzing both the production and consumption of ATP:
ATP Production
- Substrate-level Phosphorylation: Glycolysis produces ATP through substrate-level phosphorylation.
- Net Gain: For each glucose molecule, glycolysis generates 4 ATP molecules. However, 2 ATP molecules are consumed in the initial phosphorylation steps.
Calculation of Net ATP
- ATP Produced: 4 ATP (from 2 molecules of 1,3-bisphosphoglycerate)
- ATP Consumed: 2 ATP (in the energy investment phase)
- Net Gain:
- 4 ATP produced - 2 ATP consumed = 2 ATP net gain
Conclusion
Therefore, the correct answer to the total ATP gain during glycolysis from one molecule of glucose is:
- Option A: 2 ATP
Which of the following conversions involve ATP synthesis during glycolysis?- a)Glucose → Glucose-6-phosphate
- b)Fructose-6-phosphate → Fructose-1,6-biphosphate
- c)1,3-bisphosphoglyceric acid (BPGA) → 3- phosphoglyceric acid (PGA)
- d)All of these
Correct answer is option 'C'. Can you explain this answer?
Which of the following conversions involve ATP synthesis during glycolysis?
a)
Glucose → Glucose-6-phosphate
b)
Fructose-6-phosphate → Fructose-1,6-biphosphate
c)
1,3-bisphosphoglyceric acid (BPGA) → 3- phosphoglyceric acid (PGA)
d)
All of these
|
|
Preeti Iyer answered |
In the energy conserving phase of glycolysis, the conversion of BPGA to PGA is catalyzed by phosphoglycerate kinase. The phosphate on carbon 1 is transferred to a molecule of ADP, yielding ATP and 3-phosphoglycerate. This type of ATP synthesis, traditionally referred to as substrate-level phosphorylation, involves the direct transfer of a phosphate group from a substrate molecule to ADP, to form ATP.
In Krebs cycle the FAD participates as electron acceptor during the conversion of- a)Succinyl CoA to succinic acid
- b)α− ketoglutarate to succinyl CoA
- c)Succinic acid to fumaric acid
- d)Fumaric acid to malic acid
Correct answer is option 'C'. Can you explain this answer?
In Krebs cycle the FAD participates as electron acceptor during the conversion of
a)
Succinyl CoA to succinic acid
b)
α− ketoglutarate to succinyl CoA
c)
Succinic acid to fumaric acid
d)
Fumaric acid to malic acid
|
Bhavana Desai answered |
Conversion of Succinic acid to fumaric acid in Krebs cycle:
- Step in Krebs Cycle:
In the Krebs cycle, the conversion of succinic acid to fumaric acid occurs as part of the overall process of generating energy from carbohydrates, fats, and proteins.
- Role of FAD:
During this step, FAD (flavin adenine dinucleotide) acts as an electron acceptor. FAD accepts electrons from succinic acid, which is converted to fumaric acid in the process.
- Function of FAD:
FAD plays a crucial role in the electron transport chain, where it accepts electrons and transports them to complex II of the respiratory chain. This helps in the generation of ATP, the energy currency of the cell.
- Overall Process:
The conversion of succinic acid to fumaric acid is a key step in the Krebs cycle, as it helps in the production of ATP through oxidative phosphorylation. This process is essential for the cell to generate energy for various cellular activities.
- Significance:
The involvement of FAD in this step highlights the importance of electron carriers in the Krebs cycle. These carriers help in transferring electrons from one molecule to another, ultimately leading to the production of ATP.
- Conclusion:
In conclusion, FAD participates as an electron acceptor during the conversion of succinic acid to fumaric acid in the Krebs cycle. This process is vital for energy production and highlights the intricate mechanisms involved in cellular respiration.
- Step in Krebs Cycle:
In the Krebs cycle, the conversion of succinic acid to fumaric acid occurs as part of the overall process of generating energy from carbohydrates, fats, and proteins.
- Role of FAD:
During this step, FAD (flavin adenine dinucleotide) acts as an electron acceptor. FAD accepts electrons from succinic acid, which is converted to fumaric acid in the process.
- Function of FAD:
FAD plays a crucial role in the electron transport chain, where it accepts electrons and transports them to complex II of the respiratory chain. This helps in the generation of ATP, the energy currency of the cell.
- Overall Process:
The conversion of succinic acid to fumaric acid is a key step in the Krebs cycle, as it helps in the production of ATP through oxidative phosphorylation. This process is essential for the cell to generate energy for various cellular activities.
- Significance:
The involvement of FAD in this step highlights the importance of electron carriers in the Krebs cycle. These carriers help in transferring electrons from one molecule to another, ultimately leading to the production of ATP.
- Conclusion:
In conclusion, FAD participates as an electron acceptor during the conversion of succinic acid to fumaric acid in the Krebs cycle. This process is vital for energy production and highlights the intricate mechanisms involved in cellular respiration.
Read the given statements and select the correct option.
Statement 1: Mitochondria is known as power house of cell.
Statement 2: ATP synthesis occurs in mitochondria.- a)Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1
- b)Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1
- c)Statement 1 is correct and statement 2 is incorrect
- d)Both statements 1 and 2 are incorrect
Correct answer is option 'A'. Can you explain this answer?
Read the given statements and select the correct option.
Statement 1: Mitochondria is known as power house of cell.
Statement 2: ATP synthesis occurs in mitochondria.
Statement 1: Mitochondria is known as power house of cell.
Statement 2: ATP synthesis occurs in mitochondria.
a)
Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1
b)
Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1
c)
Statement 1 is correct and statement 2 is incorrect
d)
Both statements 1 and 2 are incorrect
|
|
Jyoti Sengupta answered |
Mitochondria are cell organelles of eukaryotes. These are site of aerobic respiration, where Krebs' cycle occurs in matrix, while ETS and oxidative phosphorylation enzymes are located in inner membrane. They are called power houses of cell because they produce energy in the form of ATP. They are the major centres of release of energy in the aerobic respiration.
During complete metabolism of glucose, the number of ATP formed is- a)2
- b)12
- c)36
- d)44
Correct answer is option 'C'. Can you explain this answer?
During complete metabolism of glucose, the number of ATP formed is
a)
2
b)
12
c)
36
d)
44
|
Anagha Sengupta answered |
Complete Metabolism of Glucose
The complete metabolism of glucose through cellular respiration involves several stages: Glycolysis, the Krebs cycle, and the Electron Transport Chain (ETC). Here’s a breakdown of ATP production in each stage.
1. Glycolysis
- Occurs in the cytoplasm.
- Converts one glucose molecule into two molecules of pyruvate.
- Produces:
- 2 ATP (net gain).
- 2 NADH (which can yield additional ATP during oxidative phosphorylation).
2. Pyruvate Decarboxylation
- Pyruvate enters the mitochondria and is converted to Acetyl-CoA.
- Produces:
- 2 NADH (one from each pyruvate).
3. Krebs Cycle (Citric Acid Cycle)
- Takes place in the mitochondrial matrix.
- Each Acetyl-CoA enters the cycle, producing:
- 2 ATP (1 ATP per cycle, and two cycles per glucose).
- 6 NADH (3 per cycle).
- 2 FADH2 (1 per cycle).
4. Electron Transport Chain (ETC)
- Located in the inner mitochondrial membrane.
- NADH produces approximately 2.5 ATP each, and FADH2 produces about 1.5 ATP each.
- From the previous stages:
- 10 NADH = 10 x 2.5 = 25 ATP.
- 2 FADH2 = 2 x 1.5 = 3 ATP.
Total ATP Calculation
- Glycolysis: 2 ATP + 2 NADH (5 ATP).
- Pyruvate Decarboxylation: 2 NADH (5 ATP).
- Krebs Cycle: 2 ATP + 6 NADH (15 ATP) + 2 FADH2 (3 ATP).
- Total: 2 + 5 + 5 + 2 + 15 + 3 = 32 ATP.
However, due to the use of ATP for transport and other processes, the net yield is typically rounded to about 30-36 ATP, commonly cited as 36 ATP for simplicity.
Conclusion
Thus, the correct answer is option 'C', with 36 ATP being formed during the complete metabolism of one glucose molecule.
The complete metabolism of glucose through cellular respiration involves several stages: Glycolysis, the Krebs cycle, and the Electron Transport Chain (ETC). Here’s a breakdown of ATP production in each stage.
1. Glycolysis
- Occurs in the cytoplasm.
- Converts one glucose molecule into two molecules of pyruvate.
- Produces:
- 2 ATP (net gain).
- 2 NADH (which can yield additional ATP during oxidative phosphorylation).
2. Pyruvate Decarboxylation
- Pyruvate enters the mitochondria and is converted to Acetyl-CoA.
- Produces:
- 2 NADH (one from each pyruvate).
3. Krebs Cycle (Citric Acid Cycle)
- Takes place in the mitochondrial matrix.
- Each Acetyl-CoA enters the cycle, producing:
- 2 ATP (1 ATP per cycle, and two cycles per glucose).
- 6 NADH (3 per cycle).
- 2 FADH2 (1 per cycle).
4. Electron Transport Chain (ETC)
- Located in the inner mitochondrial membrane.
- NADH produces approximately 2.5 ATP each, and FADH2 produces about 1.5 ATP each.
- From the previous stages:
- 10 NADH = 10 x 2.5 = 25 ATP.
- 2 FADH2 = 2 x 1.5 = 3 ATP.
Total ATP Calculation
- Glycolysis: 2 ATP + 2 NADH (5 ATP).
- Pyruvate Decarboxylation: 2 NADH (5 ATP).
- Krebs Cycle: 2 ATP + 6 NADH (15 ATP) + 2 FADH2 (3 ATP).
- Total: 2 + 5 + 5 + 2 + 15 + 3 = 32 ATP.
However, due to the use of ATP for transport and other processes, the net yield is typically rounded to about 30-36 ATP, commonly cited as 36 ATP for simplicity.
Conclusion
Thus, the correct answer is option 'C', with 36 ATP being formed during the complete metabolism of one glucose molecule.
Which of the following steps of respiration is amphibolic?- a)Glycolysis
- b)Oxidative decarboxylation of pyruvate
- c)TCA cycle
- d)Oxidative phosphorylation
Correct answer is option 'C'. Can you explain this answer?
Which of the following steps of respiration is amphibolic?
a)
Glycolysis
b)
Oxidative decarboxylation of pyruvate
c)
TCA cycle
d)
Oxidative phosphorylation
|
|
Ameya Yadav answered |
The correct answer is option 'C', which is the TCA cycle.
The TCA cycle, also known as the citric acid cycle or Krebs cycle, is an important step in cellular respiration. It is a series of chemical reactions that occur in the mitochondria of eukaryotic cells. The TCA cycle plays a central role in the breakdown of carbohydrates, fats, and proteins to generate energy in the form of ATP.
Here is a detailed explanation of why the TCA cycle is considered amphibolic:
1. What is an amphibolic pathway?
An amphibolic pathway is a metabolic pathway that has both catabolic and anabolic functions. Catabolism refers to the breakdown of molecules to release energy, while anabolism refers to the synthesis of molecules using energy. Amphibolic pathways can serve as a link between different metabolic pathways, allowing the flow of metabolites in multiple directions.
2. Overview of the TCA cycle:
The TCA cycle is a central metabolic pathway that oxidizes acetyl-CoA, a product of glycolysis and fatty acid oxidation, to generate energy. It consists of a series of enzymatic reactions that result in the production of NADH, FADH2, and ATP.
3. Catabolic function of the TCA cycle:
The TCA cycle is primarily a catabolic pathway that breaks down acetyl-CoA, derived from glucose or fatty acids, into carbon dioxide and high-energy electrons. This process releases energy in the form of NADH and FADH2, which are then used in oxidative phosphorylation to produce ATP.
4. Anabolic function of the TCA cycle:
The TCA cycle also has anabolic functions. Some intermediates of the cycle can be used as precursors for the synthesis of other molecules, such as amino acids, nucleotides, and lipids. For example, alpha-ketoglutarate can be converted to glutamate, which is an important amino acid.
5. Integration with other metabolic pathways:
The TCA cycle is interconnected with other metabolic pathways. For example, it receives pyruvate, the end product of glycolysis, which is converted into acetyl-CoA before entering the TCA cycle. Additionally, fatty acids can be broken down into acetyl-CoA, which can then be used in the TCA cycle. This integration allows the TCA cycle to receive inputs from both carbohydrate and lipid metabolism.
In conclusion, the TCA cycle is considered amphibolic because it serves both catabolic and anabolic functions. It plays a central role in energy production and the synthesis of important molecules.
The TCA cycle, also known as the citric acid cycle or Krebs cycle, is an important step in cellular respiration. It is a series of chemical reactions that occur in the mitochondria of eukaryotic cells. The TCA cycle plays a central role in the breakdown of carbohydrates, fats, and proteins to generate energy in the form of ATP.
Here is a detailed explanation of why the TCA cycle is considered amphibolic:
1. What is an amphibolic pathway?
An amphibolic pathway is a metabolic pathway that has both catabolic and anabolic functions. Catabolism refers to the breakdown of molecules to release energy, while anabolism refers to the synthesis of molecules using energy. Amphibolic pathways can serve as a link between different metabolic pathways, allowing the flow of metabolites in multiple directions.
2. Overview of the TCA cycle:
The TCA cycle is a central metabolic pathway that oxidizes acetyl-CoA, a product of glycolysis and fatty acid oxidation, to generate energy. It consists of a series of enzymatic reactions that result in the production of NADH, FADH2, and ATP.
3. Catabolic function of the TCA cycle:
The TCA cycle is primarily a catabolic pathway that breaks down acetyl-CoA, derived from glucose or fatty acids, into carbon dioxide and high-energy electrons. This process releases energy in the form of NADH and FADH2, which are then used in oxidative phosphorylation to produce ATP.
4. Anabolic function of the TCA cycle:
The TCA cycle also has anabolic functions. Some intermediates of the cycle can be used as precursors for the synthesis of other molecules, such as amino acids, nucleotides, and lipids. For example, alpha-ketoglutarate can be converted to glutamate, which is an important amino acid.
5. Integration with other metabolic pathways:
The TCA cycle is interconnected with other metabolic pathways. For example, it receives pyruvate, the end product of glycolysis, which is converted into acetyl-CoA before entering the TCA cycle. Additionally, fatty acids can be broken down into acetyl-CoA, which can then be used in the TCA cycle. This integration allows the TCA cycle to receive inputs from both carbohydrate and lipid metabolism.
In conclusion, the TCA cycle is considered amphibolic because it serves both catabolic and anabolic functions. It plays a central role in energy production and the synthesis of important molecules.
Which of the following reactions is catalysed by the enzyme phosphofructokinase?- a)Fructose-1,6-bisphophate → Fructose-6-phosphate
- b)Fructose-6-phosphate + ATP → Fructose-1,6-bisphosphate
- c)G-3-P → Dihydroxy acetone phosphate
- d)Glucose-6-phosphate → Fructose-6-phosphate
Correct answer is option 'B'. Can you explain this answer?
Which of the following reactions is catalysed by the enzyme phosphofructokinase?
a)
Fructose-1,6-bisphophate → Fructose-6-phosphate
b)
Fructose-6-phosphate + ATP → Fructose-1,6-bisphosphate
c)
G-3-P → Dihydroxy acetone phosphate
d)
Glucose-6-phosphate → Fructose-6-phosphate
|
EduRev NEET answered |
Phosphofructokinase is a kinase enzyme that phosphorylates fructose-6-phosphate in glycolysis. The enzyme catalysed transfer of a phosphoryl group from ATP is an important reaction in a wide variety of biological processes.
Which of the following statements are correct?(A) The oxidation of pyruvic acid molecules formed in glycolysis occurs inside the mitochondria.(B) Acetyl CoA is a 3-carbon compound.(C) Under anaerobic conditions, the pyruvic acid formed during glycolysis is reduced to either ethyl alcohol or lactic acid.(D) Acetyl CoA molecules enter into cyclic reactions during Calvin cycle.- a)(A) and (B)
- b)(C) and (D)
- c)(A) and (C)
- d)(B) and (C)
Correct answer is option 'C'. Can you explain this answer?
Which of the following statements are correct?
(A) The oxidation of pyruvic acid molecules formed in glycolysis occurs inside the mitochondria.
(B) Acetyl CoA is a 3-carbon compound.
(C) Under anaerobic conditions, the pyruvic acid formed during glycolysis is reduced to either ethyl alcohol or lactic acid.
(D) Acetyl CoA molecules enter into cyclic reactions during Calvin cycle.
a)
(A) and (B)
b)
(C) and (D)
c)
(A) and (C)
d)
(B) and (C)
|
|
EduRev NEET answered |
Acetyl CoA is a 2-carbon compound and 3-phosphoglycerate molecule enter into cyclic reactions during Calvin cycle.
At the end of citric acid cycle, most of the energy is transferred to- a)Oxaloacetic acid
- b)Citric acid
- c)NADH and FADH2
- d)ATP
Correct answer is option 'C'. Can you explain this answer?
At the end of citric acid cycle, most of the energy is transferred to
a)
Oxaloacetic acid
b)
Citric acid
c)
NADH and FADH2
d)
ATP
|
Sinjini Das answered |
Energy Transfer in the Citric Acid Cycle
The citric acid cycle, also known as the Krebs cycle, plays a crucial role in cellular respiration by generating energy-rich molecules.
Key Products of the Cycle
- At the end of the citric acid cycle, the majority of the energy derived from the oxidation of acetyl-CoA is captured in the form of high-energy electron carriers.
- The two main carriers involved are NADH and FADH2, which are produced at several steps during the cycle.
Why NADH and FADH2?
- Reduction Reactions: Throughout the cycle, NAD+ and FAD are reduced to form NADH and FADH2. This process captures energy from the oxidation of substrates.
- Energy Storage: NADH and FADH2 store energy in the form of high-energy electrons, which are essential for the subsequent production of ATP during oxidative phosphorylation.
Comparison with Other Products
- While ATP is produced directly during the cycle, the amount is relatively small compared to the energy stored in NADH and FADH2.
- Oxaloacetic acid and citric acid are intermediates in the cycle, but they do not serve as significant energy carriers like NADH and FADH2.
Conclusion
- In summary, the majority of energy at the end of the citric acid cycle is transferred to NADH and FADH2. These molecules are crucial for the electron transport chain, where most ATP is generated, highlighting their importance in energy metabolism.
The citric acid cycle, also known as the Krebs cycle, plays a crucial role in cellular respiration by generating energy-rich molecules.
Key Products of the Cycle
- At the end of the citric acid cycle, the majority of the energy derived from the oxidation of acetyl-CoA is captured in the form of high-energy electron carriers.
- The two main carriers involved are NADH and FADH2, which are produced at several steps during the cycle.
Why NADH and FADH2?
- Reduction Reactions: Throughout the cycle, NAD+ and FAD are reduced to form NADH and FADH2. This process captures energy from the oxidation of substrates.
- Energy Storage: NADH and FADH2 store energy in the form of high-energy electrons, which are essential for the subsequent production of ATP during oxidative phosphorylation.
Comparison with Other Products
- While ATP is produced directly during the cycle, the amount is relatively small compared to the energy stored in NADH and FADH2.
- Oxaloacetic acid and citric acid are intermediates in the cycle, but they do not serve as significant energy carriers like NADH and FADH2.
Conclusion
- In summary, the majority of energy at the end of the citric acid cycle is transferred to NADH and FADH2. These molecules are crucial for the electron transport chain, where most ATP is generated, highlighting their importance in energy metabolism.
FAD + is produced during conversion of- a)Fumaric acid to Malic acid
- b)Isocitric acid Oxalosuccinic acid
- c)Citric acid to isocitric acid
- d)Succinic acid to Fumaric acid
Correct answer is option 'D'. Can you explain this answer?
FAD + is produced during conversion of
a)
Fumaric acid to Malic acid
b)
Isocitric acid Oxalosuccinic acid
c)
Citric acid to isocitric acid
d)
Succinic acid to Fumaric acid
|
Pooja Choudhary answered |
During citric acid cycle, Succinic acid is converted into Fumaric acid during which FAD + FAD + molecules is produce that produce 2 ATP molecules.
Glycerol would enter the amphibolic pathway after being converted into- a)PGAL
- b)Fatty acids
- c)Acetyl co A
- d)Glucose
Correct answer is option 'A'. Can you explain this answer?
Glycerol would enter the amphibolic pathway after being converted into
a)
PGAL
b)
Fatty acids
c)
Acetyl co A
d)
Glucose
|
|
Anand Jain answered |
Glycerol would enter the pathway after being converted to PGAL.
In animal cells, the first stage of glucose breakdown is [1994]- a)Krebs cycle
- b)glycolysis
- c)oxidative phosphorylation
- d)E.T.C
Correct answer is option 'B'. Can you explain this answer?
In animal cells, the first stage of glucose breakdown is [1994]
a)
Krebs cycle
b)
glycolysis
c)
oxidative phosphorylation
d)
E.T.C
|
Prisha Singh answered |
The initial breakdown of glucose occurs in the cell cytoplasm. This is an anaerobic reaction of cellular respiration, meaning that it does not require oxygen. Here, in a series of eight individual reactions, a six-carbon glucose molecule is metabolized using two adenosine triphosphate (ATP) molecules to form two three-carbon pyruvate molecules, two H2O (water) molecules and four ATP molecules for a net gain of two ATP molecules. ATP is a primary source of energy in human metabolism.
R.Q. is ratio of [1990]- a)CO2 produced to substrate consumed
- b)CO2 produced to O2 consumed
- c)oxygen consumed to water produced
- d)oxygen consumed to CO2 produced
Correct answer is option 'B'. Can you explain this answer?
R.Q. is ratio of [1990]
a)
CO2 produced to substrate consumed
b)
CO2 produced to O2 consumed
c)
oxygen consumed to water produced
d)
oxygen consumed to CO2 produced
|
Ritika Khanna answered |
The respiratory quotient (RQ), the ratio of CO2 produced to O2 consumed. This ratio is used to indicate the mixture of lipids, carbohydrates and proteins in the metabolic substrate. In this analysis, we report the RQ for two bird species, Passer domesticus and Auriparus flaviceps, under several dietary and fasting regimes.
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