NEET  >  Biology 31 Years NEET Chapterwise Solved Papers  >  31 Years NEET Previous Year Questions: Respiration in Plants - 1 Download as PDF

31 Years NEET Previous Year Questions: Respiration in Plants - 1


Test Description

30 Questions MCQ Test Biology 31 Years NEET Chapterwise Solved Papers | 31 Years NEET Previous Year Questions: Respiration in Plants - 1

31 Years NEET Previous Year Questions: Respiration in Plants - 1 for NEET 2022 is part of Biology 31 Years NEET Chapterwise Solved Papers preparation. The 31 Years NEET Previous Year Questions: Respiration in Plants - 1 questions and answers have been prepared according to the NEET exam syllabus.The 31 Years NEET Previous Year Questions: Respiration in Plants - 1 MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 below.
Solutions of 31 Years NEET Previous Year Questions: Respiration in Plants - 1 questions in English are available as part of our Biology 31 Years NEET Chapterwise Solved Papers for NEET & 31 Years NEET Previous Year Questions: Respiration in Plants - 1 solutions in Hindi for Biology 31 Years NEET Chapterwise Solved Papers course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt 31 Years NEET Previous Year Questions: Respiration in Plants - 1 | 30 questions in 25 minutes | Mock test for NEET preparation | Free important questions MCQ to study Biology 31 Years NEET Chapterwise Solved Papers for NEET Exam | Download free PDF with solutions
1 Crore+ students have signed up on EduRev. Have you?
31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 1

Which of the following statements is incorrect?     [2021]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 1

Oxidation of one molecule of NADH gives rise to 3 molecules of ATP, while that of one molecule of FADH2 produces 2 molecules of ATP.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 2

The number of substrate level phosphorylations in one turn of citric acid cycle is :   [2020]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 2

During Krebs' or citric acid cycle, succinyl-CoA is acted upon by enzyme succinyl-CoA synthetase to form succinate (a 4C compound). The reaction releases sufficient energy to form ATP (in plants) or GTP (in animals) by substrate-level phosphorylation. GTP can then be used to form ATP.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 3

Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalysed by    [2019]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 3

Glucose is phosphorylated to glucose-6- phosphate by ATP in presence of enzyme hexokinase and Mg2+.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 4

The three boxes in this diagram represents the three major  biosynthetic pathways in aerobic respiration. Arrows represents net reactants or products. [NEET 2013]

Arrows numbered 4, 8 and 12 can all be :

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 4

 In a given diagram of aerobic respiration – pathway A is glycolysis, pathway B is kreb’s cycle and pathway C is ETS , thus  4, 8 & 12 are ATP. ATP act as energy currency. The energy trapped in form of ATP and it broken down whenever and wherever it needs to be utilised.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 5

Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins? [NEET 2013]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 5

Carbohydrates are usually first converted into glucose before they are used for respiration. Fats are broken down into glycerol and fatty acids first. If fatty acids were to be respired they would first be degraded to acetyl CoA and enter the pathway. Glycerol would enter the pathway after being converted to 3-phosphoglyceraldehyde (PGAL). The proteins are degraded by proteases to individual amino acids (after deamination) and depending on their structure enter the pathway within the Krebs’ cycle or as pyruvate or acetyl CoA. Thus, acetyl CoA is the common metabolite of all the three (carbohydrates, proteins and fats).

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 6

The energy - releasing metabolic process in which substrate is oxidised without an external electron acceptor is called: [2010]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 6

The energy releasing metabolic process in which substrate is oxidised without 
an external electron acceptor is called fermentation.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 7

Aerobic respiratory pathway is appropriately termed: [2009]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 7

All energy-releasing pathways whether aerobic (requiring oxygen) or anaerobic (not requiring oxygen) begin with a pathway called glycolysis, which occurs in the cytoplasm (cytosol). Aerobic respiratory pathway is appropriately termed amphibolic. Aerobic respiration is the main energy-releasing pathway leading to ATP formation. It occurs in the mitochondria. Aerobic respiration yields thirty-six ATP

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 8

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because: [2008]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 8

Chemiosmotic theory postulated by the British biochemist Peter Mitchell (1920-22) to explain the formation of ATP in the mitochondrial electron transport chain. As electrons are transferred along the electron carrier system in the inner mitochondrial membrane, hydrogen ions (protons) are actively transported into the space between the inner and outer mitochondrial membranes, which thus contains a higher concentration of protons than the matrix. This creates an electrochemical gradient across the inner membrane, through which protons move back into the matrix

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 9

In germinating seeds fatty acids are degraded exclusively in the [2008]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 9

In germinating seeds, fatty acids are degraded exclusively in the glyoxysomes. Glyoxylate cycle occurs in tissues rich in fats, such as those of germinating seeds; the enzymes involved in the cycle, which have not been found in mammals, are contained in organelles called glyoxysomes

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 10

The energy-releasing process in which the substrate is oxidised without an external electron acceptor is called [2008]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 10

Fermentation is an anaerobic pathway which takes place in certain bacteria and fungi which do not involve electron transport chain. In this process, substrate level phosphorylation takes place in glycolysis producing 2 ATP molecules. 

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 11

The overall goal of glycolysis, krebs cycle and the electron transport system is the formation of[2007]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 11

Glycolysis, Krebs cycle and electron transport system, they all give ATP  which is the main energy currency of our body. Glycosis takes place in cytoplasm, Krebs cycle also in cytoplasm and ETS takes place in the mitochondria.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 12

All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is [2007]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 12

Succinate dehydrogenase enzyme is present on inner membrane of mitochondria and catalysed the oxidation of succinate to fumarate.

Succinate dehydrogenase enzyme is present on inner membrane of mitochondria and catalysed the oxidation of succinate to fumarate.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 13

The bacterium (Clostridium botulinum) that  causes botulism is [2006]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 13

Clostridium botulinum is an obligate anaerobe i.e. it normally lives in the absence of oxygen. Facultative anaerobes are those who generally live in oxygen but may live without oxygen in suitable medium. Obligate aerobes can only live in the presence of oxygen while facultative aerobes generally live in oxygen but can also live without oxygen.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 14

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO2 and H2O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal ? [2006]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 14

12 kcal of energy present in one molecule of ATP & on oxidation of one mole of glucose into CO2 and H2O energy released in 686 kcal. So no. of ATP which can store this energy would be = 57.1 = 57 ATPs.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 15

During the stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP [2005]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 15

In glycolysis 4 ATP and 2NADH2 molecules are formed. These 2NADH2  molecules go to electron transport chain. In oxidative decarboxylation no ATP molecule is formed but two molecules of 2NADH2  are formed from two molecules of pyruvate. These two NADH2go to electron transport chain. In Kreb's cycle 2 ATP, 6NADH2and 2FADH2 molecules are formed from two molecule of acetyl Co-A. These NADH2 and 2FADH2  go to electron transport chain. In electron transport chain all 2NADH2   and 2FADH2  pass to electron carriers and yield 3 ATP and 2 ATP molecules per 2NADH2   and 2FADH2  respectively. Thus,  4 ATP are formed in glycolysis, 2 ATP in Krebs cycle and 34 ATP from electron transport chain. 40 ATP and 2 ATP molecules are used during glycolysis. So, net gain of ATP molecules during one complete oxidation of a glucose molecule is 38 ATP.

 

So, the correct answer is 'Electron transport chain'.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 16

Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:[2005]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 16

The enzyme responsible for oxidative phosphorylation is ATP synthase. ATP synthase is located in the F1 component of F0 – F1 or elementary particles. ATP synthase becomes active in ATP formation only where there is a proton gradient having higher concentration of H+ or protons on the F0 side as compared to F1 side. Increased proton concentration is produced in the outer chamber of outer surface of inner mitochondrial memberane by the pushing of protons with the help of energy liberated by passage of electrons from one carrier to another.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 17

In glycolysis, during oxidation electrons are removed by [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 17

ATP is the energy currency in all cells. Glyceraldehyde 3 - phosphate is reduced during glycolysis. Molecular oxygen is the terminal electron acceptor in ETS.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 18

n which one of the following  do the two names refer to one and the same thing ? [2003]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 18

TCA cycle is so called because the first stable product formed is a tricarboxylic acid molecule that is citric acid. Hence the name citric acid cycle . It is also called the Krebs cycle.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 19

Which one of the following concerns photophosphorylation ? [2003]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 19

Photophosphorylation refers to addition of phosphate in the presence of light.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 20

During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undegraded ? [2003]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 20

Lignin is a complex polymer of phenylpropane units, which are crosslinked to each other with a variety of different chemical bonds.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 21

In alcoholic fermentation [2003]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 21

In alcohol fermentation triose phosphate is the electron donor while acetaldehyde is the electron acceptor.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 22

How many ATP molecules are produced by aerobic oxidation of one molecule of glucose? [2002]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 22

38 ATP molecules are produced by aerobic oxidation of glucose.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 23

Net gain of ATP molecules during aerobic respiration is [1999]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 23

During aerobic respiration, 38 ATP molecules are gained. If specifically aerobic respiration in eukaryotes is asked, then the answer would be 36 ATP because 2 ATP molecules are produced by which accepts the form 2 NADH molecules produced in glycolysis

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 24

Maximum usable energy per mol of glucose metabolised will be generated during [1999]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 24

The energy yield during aerobic respiration (36 ATP) is 18 times of that  during anaerobic respiration ( 2 ATP).

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 25

Site of respiration in bacteria is [1997]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 25

Mesosome.
Mesosomes are the invaginations of the plasma membrane that can form into vesicles. They are found to be present in both gram-positive and gram-negative bacteria. Mesosomes may play a role in cell wall formation during cell division and/or chromosome replication and distribution and/or electron transfer systems of respiration. 

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 26

In Krebs cycle FAD participates as electron acceptor during the conversion of [1997]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 26

In the conversion of succinyl Co A to succinic acid, energy liberated during hydrolysis of succinyl CoA is used in synthesis of  GTP. For the conversion of alfa-ketoglutarate to succinyl CoA, NAD+ and CoA are required. Conversion of fumaric acid to malic acid involves simple hydration. FAD participates in conversion of succinic acid to fumaric acid.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 27

The mechanism of ATP formation both in chloroplast and mitochondria is explained by[1997]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 27

According to the chemiosmotic theory the energy liberated during electron transport performs the osmotic work of  accumulating H+ ions, conserving energy in building a proton gradient, which is used to build ATP from ADP and inorganic phosphate.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 28

Fermentation is anaerobic production of [1996]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 28

Fermentation is referred to as the decomposition of organic compounds, anaerobically by enzymes yielding alcohol, organic acids; gases etc.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 29

Krebs cycle occurs in [1996]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 29

The enzyme involved in Krebs cycle are localized in the mitochondrial matrix.

31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 30

The enzymes hexokinase which catalyses glucose to glucose-6-phosphate in glycolysis is inhibited by glucose-6-phosphate. This is an example of [1996]

Detailed Solution for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 - Question 30

Competitive inhibition is the reversible inhibition of enzyme activity due to presence of substrate analogues. Non competitive inhibition is the reduction of enzyme activity by a factor that has no real structural similarity with the substrate. Allosteric inhibition  is reversible  noncompetitive inhibition occurring in case of allosteric enzymes. Herein the inhibitors are the products or intermediates of reactions catalyzed by the enzymes. Hence it is also called end product inhibition or feedback inhibition.

Use Code STAYHOME200 and get INR 200 additional OFF
Use Coupon Code
Information about 31 Years NEET Previous Year Questions: Respiration in Plants - 1 Page
In this test you can find the Exam questions for 31 Years NEET Previous Year Questions: Respiration in Plants - 1 solved & explained in the simplest way possible. Besides giving Questions and answers for 31 Years NEET Previous Year Questions: Respiration in Plants - 1, EduRev gives you an ample number of Online tests for practice