- 1(current)
Q. No.During the conversion of pyruvic acid to acetyl CoA in mitochondrial matrix:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | pyruvic acid is reduced. |
| II: | NAD+ is oxidized. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Kreb's Cycle |
56%
Level 3: 35%-60%
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Hints
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Identify the incorrect statement regarding the TCA (Krebs) cycle:
| 1. | The TCA cycle begins with the condensation of the acetyl group with oxaloacetic acid (OAA) to form citric acid, catalyzed by citrate synthase. |
| 2. | The TCA cycle involves three steps where NAD⁺ is reduced to NADH + H⁺ and one step where FAD⁺ is reduced to FADH₂. |
| 3. | During the conversion of succinyl-CoA to succinic acid, ATP is synthesized directly through substrate-level phosphorylation. |
| 4. | The continuous functioning of the TCA cycle depends on the regeneration of oxaloacetic acid as well as NAD⁺ and FAD⁺ from NADH and FADH₂. |
Subtopic: Kreb's Cycle |
54%
Level 3: 35%-60%
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Hints
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Consider the given two statements:
| Statement I: | Pyruvate is decarboxylated to acetyl CoA in the cytoplasm |
| Statement II: | Acetyl CoA enters the Krebs cycle to produce ATP. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Kreb's Cycle |
58%
Level 3: 35%-60%
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Hints
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- 1(current)
Q. No.
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