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Q. No.What percent of net ATP molecules produced in glycolysis are a result of substrate level phosphorylation?
1. 25
2. 50
3. 75
4. 100
Subtopic: Glycolysis |
From NCERT
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Consider the given two statements:
Which of the following is correct?
| Statement A: | Fatty acids are first converted to phosphoglyceraldehyde (PGAL) before entering the glycolytic pathway. |
| Statement B: | Glycerol undergoes β-oxidation to form acetyl-CoA, which then enters the citric acid cycle. |
Which of the following is correct?
| 1. | Both Statement A and Statement B are correct. |
| 2. | Both Statement A and Statement B are incorrect. |
| 3. | Statement A is correct, but Statement B is incorrect. |
| 4. | Statement A is incorrect, but Statement B is correct. |
Subtopic: The Respiratory Balance Sheet |
From NCERT
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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 |
52%
From NCERT
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Consider the given two statements:
| Assertion (A): | Oxidative phosphorylation occurs in the inner mitochondrial membrane. |
| Reason (R): | The inner mitochondrial membrane is permeable to protons. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Oxidative Phosphorylation |
From NCERT
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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 |
51%
From NCERT
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Alcohol fermentation by yeast produces:
1. \(\text{CO}_2\) and ethanol
2. Lactic acid and ATP
3. Ethanol, \(\text{CO}_2\), and NAD+
4. Pyruvate and NADH
1. \(\text{CO}_2\) and ethanol
2. Lactic acid and ATP
3. Ethanol, \(\text{CO}_2\), and NAD+
4. Pyruvate and NADH
Subtopic: Fermentation |
From NCERT
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In ETS in mitochondria, oxygen acts as a:
1. Only A
2. Only B
3. Both A and B
4. Neither A nor B
| A. | Final acceptor of electrons |
| B. | Final acceptor of protons |
2. Only B
3. Both A and B
4. Neither A nor B
Subtopic: ETS |
51%
From NCERT
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Consider the given two statements:
| Assertion (A): | Fermentation is a type of anaerobic respiration where glucose is partially oxidized to produce energy. |
| Reason (R): | Fermentation results in the production of ethanol or lactic acid without the use of oxygen. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True, (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Fermentation |
From NCERT
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In lactic acid and alcohol fermentation:
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: | less than 7 percent of energy in glucose is released. |
| II: | all energy released is trapped as high energy bonds of ATP. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Fermentation |
57%
From NCERT
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In mitochondrial electron transport chain:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | Complex I is NADH dehydrogenase |
| II: | Complex II is succinate dehydrogenase |
| III: | Complex III is cytochrome b6f complex. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: ETS |
53%
From NCERT
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