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Q. No.Consider the given two statements:
Statement I:
Succinate dehydrogenase is an enzyme complex found in the inner mitochondrial membrane of eukaryotes.
Statement II:
Succinate dehydrogenase is the only enzyme that participates in both the citric acid cycle and the electron transport chain.
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Kreb's Cycle | Oxidative Phosphorylation | ETS:2 | ETS:1 | ETS |
79%
From NCERT
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The net number of ATP and NADH molecules produced because of glycolysis of one glucose molecule respectively will be:
1. 2 and 2
2. 2 and 4
3. 4 and 2
4. 4 and 4
1. 2 and 2
2. 2 and 4
3. 4 and 2
4. 4 and 4
Subtopic: Glycolysis |
72%
From NCERT
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A molecule of ATP is produced in glycolysis during:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | The conversion of glucose into glucose 6-phosphate. |
| II: | The conversion of fructose 6-phosphate to fructose 1, 6-bisphosphate. |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Glycolysis |
73%
From NCERT
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The correct chronology of steps of formation of the given metabolites in TCA cycle is:
| 1. | Isocitrate – Citrate – Succinyl CoA – α ketoglutarate |
| 2. | Citrate – Isocitrate – Succinyl CoA – α ketoglutarate |
| 3. | Citrate – Isocitrate – α ketoglutarate – Succinyl CoA |
| 4. | Isocitrate – Citrate – α ketoglutarate – Succinyl CoA |
Subtopic: Kreb's Cycle |
85%
From NCERT
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Which enzyme is associated with Complex II of the mitochondrial Electron Transport System?
1. NADH dehydrogenase
2. Succinate dehydrogenase
3. Pyruvate dehydrogenase
4. Malate dehydrogenase
1. NADH dehydrogenase
2. Succinate dehydrogenase
3. Pyruvate dehydrogenase
4. Malate dehydrogenase
Subtopic: ETS |
84%
From NCERT
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A net gain of how many ATP molecules occurs during aerobic respiration of one molecule of glucose?
1. 30
2. 32
3. 36
4. 38
1. 30
2. 32
3. 36
4. 38
Subtopic: Aerobic Respiration |
74%
From NCERT
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A eukaryotic cell respires aerobically and uses glucose as the respiratory substrate. Which of the following steps in the process will take place in the cytoplasm of the cell?
1. glycolysis
2. Krebs cycle
3. electron transport system
4. transition reaction
1. glycolysis
2. Krebs cycle
3. electron transport system
4. transition reaction
Subtopic: Glycolysis | Glycolysis Regulation |
94%
From NCERT
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The number of correct statements from the given statements regarding possible respiratory substrates is:
1. 1
2. 2
3. 3
4. 4
| I: | Glucose is the favoured substrate for respiration. |
| II: | All carbohydrates are usually first converted into glucose before they are used for respiration. |
| III: | Glycerol would enter the pathway after being converted to Acetyl CoA. |
| IV: | Proteins and amino acids cannot be used as respiratory substrates. |
2. 2
3. 3
4. 4
Subtopic: Amphibolic Nature of Respiration |
59%
From NCERT
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The correct comparisons between fermentation and aerobic respiration will include:
1. Only A
2. Only A and B
3. Only B and C
4. A, B and C
| Fermentation | Aerobic respiration | |
| A. | accounts for only a partial breakdown of glucose | glucose is completely degraded to CO2 and H2O |
| B. | there is a net gain of only two molecules of ATP for each molecule of glucose degraded to pyruvic acid | there is a net gain of many more molecules of ATP for each molecule of glucose degraded to pyruvic acid |
| C. | NADH is oxidised to NAD+ vigorously | NADH is oxidised to NAD+rather slowly |
2. Only A and B
3. Only B and C
4. A, B and C
Subtopic: Fermentation | Aerobic Respiration |
From NCERT
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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. These calculations can be made only on certain assumptions including all the following except:
| 1. | There is a sequential, orderly pathway functioning, with one substrate forming the next and with glycolysis, TCA cycle and ETS pathway following one after another. |
| 2. | The NADH synthesised in glycolysis does not get transferred into the mitochondria and does not undergo oxidative phosphorylation. |
| 3. | None of the intermediates in the pathway are utilised to synthesise any other compound. |
| 4. | Only glucose is being respired – no other alternative substrates are entering in the pathway at any of the intermediary stages. |
Subtopic: Glycolysis | Glycolysis Regulation |
82%
From NCERT
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