- 1(current)
Q. No.Before pyruvate enters the citric acid cycle, it is decarboxylated, oxidized, and combined with coenzyme A, forming acetyl CoA, carbon dioxide, and one molecule of
| 1. | NADH | 2. | FADH2 |
| 3. | ATP | 4. | ADP |
Subtopic: Â Aerobic Respiration |Â Kreb's Cycle |
 86%
Level 1: 80%+
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What is the role of NAD+ in cellular respiration?
| 1. | It functions as an enzyme |
| 2. | It functions as an electron carrier |
| 3. | It is a nucleotide source for ATP synthesis |
| 4. | It is the final electron acceptor for anaerobic respiration |
Subtopic: Â Aerobic Respiration |
 58%
Level 3: 35%-60%
NEET - 2018
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Pyruvate dehydrogenase activity during aerobic respiration requires:
| 1. | Calcium | 2. | Iron |
| 3. | Cobalt | 4. | Magnesium |
Subtopic: Â Aerobic Respiration |
 84%
Level 1: 80%+
NEET - 2020
Hints
Match List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| A. | Oxidative decarboxylation | I. | Citrate synthase |
| B. | Glycolysis | II. | Pyruvate dehydrogenase |
| C. | Oxidative phosphorylation | III. | Electron transport system |
| D. | Tricarboxylic acid cycle | IV. | EMP pathway |
| Options: | A | B | C | D |
| 1. | II | IV | III | I |
| 2. | III | IV | II | I |
| 3. | II | IV | I | III |
| 4. | III | I | II | IV |
Subtopic: Â Aerobic Respiration |Â Kreb's Cycle |
 73%
Level 2: 60%+
NEET - 2023
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The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products.
Arrows numbered 4, 8, and 12 can all be:
| 1. | ATP | 2. | A2O |
| 3. | FAD+ or FADH2 | 4. | NADH |
Subtopic: Â Aerobic Respiration |
 78%
Level 2: 60%+
AIPMT - 2013
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In aerobic respiration, passing on of the electrons removed as part of the hydrogen atoms to molecular O2 with simultaneous synthesis of ATP, is associated with:
1. Outer mitochondrial membrane
2. Inner mitochondrial membrane
3. Mitochondrial matrix
4. Cytosol
1. Outer mitochondrial membrane
2. Inner mitochondrial membrane
3. Mitochondrial matrix
4. Cytosol
Subtopic: Â Aerobic Respiration |
 84%
Level 1: 80%+
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Pyruvate, which is formed by the glycolytic catabolism of carbohydrates in the cytosol:
| 1. | undergoes oxidative decarboxylation in cytosol itself by a complex set of reactions catalysed by pyruvic kinase. |
| 2. | undergoes reduction in cytosol itself by a complex set of reactions catalysed by pyruvic dehydrogenase. |
| 3. | undergoes oxidative decarboxylation in mitochondrial matrix by a complex set of reactions catalysed by pyruvic dehydrogenase. |
| 4. | undergoes oxidative phosphorylation in mitochondrial matrix by a complex set of reactions catalysed by pyruvic decarboxylase. |
Subtopic: Â Aerobic Respiration |
 76%
Level 2: 60%+
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Consider the given two statements:
| Assertion (A): | It is possible to make calculations of the net gain of ATP for every glucose molecule oxidised; but in reality this can remain only a theoretical exercise. |
| Reason (R): | These calculations can be made only on certain assumptions that are not really valid in a living system. |
| 1. | Both (A) and (R) are True and (R) correctly explains the (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of the (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Â Aerobic Respiration |Â THE RESPIRATORY BALANCE SHEET |
 88%
Level 1: 80%+
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- 1(current)
Q. No.
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