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Which of the following statements is incorrect?
- a)During aerobic respiration, the role of oxygen is limited to the terminal stage.
- b)In ETC (Electron Transport Chain), one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules.
- c)ATP is synthesized through complex V.
- d)Oxidation-reduction reactions produce proton gradients in respiration.
Correct answer is option 'B'. Can you explain this answer?
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Which of the following statements is incorrect?a)During aerobic respir...
Explanation:
The incorrect statement among the given options is option B, which states that "In ETC (Electron Transport Chain), one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules."
Electron Transport Chain (ETC)
The electron transport chain is the final stage of aerobic respiration, which occurs in the inner mitochondrial membrane. It consists of a series of electron carrier molecules that transfer electrons from NADH and FADH2 to oxygen, generating ATP in the process.
ATP Synthesis
ATP synthesis occurs through the process of chemiosmosis, which involves the generation of a proton gradient across the inner mitochondrial membrane. This proton gradient is established by the electron transport chain. The flow of electrons through the electron carriers in the ETC leads to the pumping of protons from the matrix to the intermembrane space.
Complex V (ATP Synthase)
Complex V, also known as ATP synthase, is responsible for the synthesis of ATP. It utilizes the energy stored in the proton gradient to convert ADP (adenosine diphosphate) and inorganic phosphate (Pi) into ATP (adenosine triphosphate). This process is known as oxidative phosphorylation.
Incorrect Statement
The incorrect statement is that "one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules." This statement does not accurately represent the ATP yield during oxidative phosphorylation.
In reality, the ATP yield from the oxidation of NADH and FADH2 is not a fixed number. It varies depending on the specific conditions and the efficiency of the electron transport chain. On average, the oxidation of one NADH molecule generates approximately 2.5-3 ATP molecules, while the oxidation of one FADH2 molecule generates approximately 1.5-2 ATP molecules.
Therefore, the statement in option B is incorrect because it oversimplifies the ATP yield from NADH and FADH2 oxidation in the electron transport chain.
The incorrect statement among the given options is option B, which states that "In ETC (Electron Transport Chain), one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules."
Electron Transport Chain (ETC)
The electron transport chain is the final stage of aerobic respiration, which occurs in the inner mitochondrial membrane. It consists of a series of electron carrier molecules that transfer electrons from NADH and FADH2 to oxygen, generating ATP in the process.
ATP Synthesis
ATP synthesis occurs through the process of chemiosmosis, which involves the generation of a proton gradient across the inner mitochondrial membrane. This proton gradient is established by the electron transport chain. The flow of electrons through the electron carriers in the ETC leads to the pumping of protons from the matrix to the intermembrane space.
Complex V (ATP Synthase)
Complex V, also known as ATP synthase, is responsible for the synthesis of ATP. It utilizes the energy stored in the proton gradient to convert ADP (adenosine diphosphate) and inorganic phosphate (Pi) into ATP (adenosine triphosphate). This process is known as oxidative phosphorylation.
Incorrect Statement
The incorrect statement is that "one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules." This statement does not accurately represent the ATP yield during oxidative phosphorylation.
In reality, the ATP yield from the oxidation of NADH and FADH2 is not a fixed number. It varies depending on the specific conditions and the efficiency of the electron transport chain. On average, the oxidation of one NADH molecule generates approximately 2.5-3 ATP molecules, while the oxidation of one FADH2 molecule generates approximately 1.5-2 ATP molecules.
Therefore, the statement in option B is incorrect because it oversimplifies the ATP yield from NADH and FADH2 oxidation in the electron transport chain.
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Which of the following statements is incorrect?a)During aerobic respir...
Aerobic respiration is the process that leads to the complete oxidation of organic substances in the presence of oxygen and releases CO2, water, and a large amount of energy present in the substrate. The crucial events in aerobic respiration are:
- The complete oxidation of pyruvate by the stepwise removal of all the hydrogen atoms, leaving three molecules of CO2.
- The passing on of the electrons removed as part of the hydrogen atoms to molecular O2 with the simultaneous synthesis of ATP.
When the electrons pass from one carrier to another via complex I to IV in the electron transport chain, they are coupled to ATP synthase (complex V) to produce ATP from ADP and inorganic phosphate. The number of ATP molecules synthesised depends on the nature of the electron donor. 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. Although the aerobic process of respiration takes place only in the presence of oxygen, the role of oxygen is limited to the terminal stage of the process.
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Which of the following statements is incorrect?a)During aerobic respiration, the role of oxygen is limited to the terminal stage.b)In ETC (Electron Transport Chain), one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules.c)ATP is synthesized through complex V.d)Oxidation-reduction reactions produce proton gradients in respiration.Correct answer is option 'B'. Can you explain this answer?
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Which of the following statements is incorrect?a)During aerobic respiration, the role of oxygen is limited to the terminal stage.b)In ETC (Electron Transport Chain), one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules.c)ATP is synthesized through complex V.d)Oxidation-reduction reactions produce proton gradients in respiration.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements is incorrect?a)During aerobic respiration, the role of oxygen is limited to the terminal stage.b)In ETC (Electron Transport Chain), one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules.c)ATP is synthesized through complex V.d)Oxidation-reduction reactions produce proton gradients in respiration.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is incorrect?a)During aerobic respiration, the role of oxygen is limited to the terminal stage.b)In ETC (Electron Transport Chain), one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules.c)ATP is synthesized through complex V.d)Oxidation-reduction reactions produce proton gradients in respiration.Correct answer is option 'B'. Can you explain this answer?.
Which of the following statements is incorrect?a)During aerobic respiration, the role of oxygen is limited to the terminal stage.b)In ETC (Electron Transport Chain), one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules.c)ATP is synthesized through complex V.d)Oxidation-reduction reactions produce proton gradients in respiration.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements is incorrect?a)During aerobic respiration, the role of oxygen is limited to the terminal stage.b)In ETC (Electron Transport Chain), one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules.c)ATP is synthesized through complex V.d)Oxidation-reduction reactions produce proton gradients in respiration.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is incorrect?a)During aerobic respiration, the role of oxygen is limited to the terminal stage.b)In ETC (Electron Transport Chain), one molecule of NADH + H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules.c)ATP is synthesized through complex V.d)Oxidation-reduction reactions produce proton gradients in respiration.Correct answer is option 'B'. Can you explain this answer?.
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