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Q. No.Which enzyme/s takes part in both mitochondrial ETS and Kreb’s cycle?
I:
NADH dehydrogenase
II:
Succinate dehydrogenase
III:
Isocitrate dehydrogenase
1. Only II
2. Only I and II
3. Only III
4. I, II and III
Subtopic: Kreb's Cycle |
51%
Level 3: 35%-60%
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Which component of the mitochondrial ETS is not a protein?
| 1. | Complex I | 2. | Cytochrome c |
| 3. | Ubiquinone | 4. | Complex IV |
Subtopic: ETS:2 | ETS:1 | ETS |
67%
Level 2: 60%+
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The correct path of electron transport within Complex III of the mitochondrial ETS will be:
1. Cyt b → Fe-S → Cyt C1
2. Cyt b → Cyt C1→ Fe-S
3. Fe-S → Cyt b → Cyt C1
4. Cyt C1 → Fe-S → Cyt b
1. Cyt b → Fe-S → Cyt C1
2. Cyt b → Cyt C1→ Fe-S
3. Fe-S → Cyt b → Cyt C1
4. Cyt C1 → Fe-S → Cyt b
Subtopic: ETS:2 | ETS:1 | ETS |
71%
Level 2: 60%+
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Phosphorylation [formation of ATP from ADP and inorganic phosphate] takes place in:
1. Only A and B
2. Only C and D
3. Only A and C
4. Only B and D
| A: | ER |
| B: | Golgi apparatus |
| C: | Mitochondria |
| D: | Chloroplasts |
2. Only C and D
3. Only A and C
4. Only B and D
Subtopic: Glycolysis | Glycolysis Regulation |
95%
Level 1: 80%+
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Consider the given statements:
1. Only I is correct
2. Only II and III are correct
3. I, II and III are correct
4. I, II and III are incorrect
| I: | ATP synthase is complex V of the mitochondrial ETS. |
| II: | F0 component of ATP synthase forms the channel through which protons cross the inner membrane. |
| III: | For the production of ATP, the passage of protons through the channel is coupled to the catalytic site of the F1 component of ATP synthase. |
1. Only I is correct
2. Only II and III are correct
3. I, II and III are correct
4. I, II and III are incorrect
Subtopic: ETS:2 | ETS:1 | ETS |
88%
Level 1: 80%+
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Regarding the transition [link] reaction:
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
| I: | It occurs in the matrix of mitochondria. |
| II: | It links glycolysis to the Krebs cycle. |
| III: | Two oxygen molecules are given off from glucose. |
| IV: | Four NADH molecules are formed from the reaction. |
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
Subtopic: Glycolysis | Glycolysis Regulation | Kreb's Cycle |
90%
Level 1: 80%+
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During a turn of the Krebs cycle during aerobic cellular respiration, all the following will be produced:
| I: | carbon dioxide |
| II: | ATP |
| III: | water |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Kreb's Cycle |
56%
Level 3: 35%-60%
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What number would in represented by ‘X’ in the given equations?
1. 2
2. 4
3. 6
4. 1
| I: | \(\mathrm{C_6H_{12}O_6} → 2~ \text {pyruate} + \text{X} \text {ATP}\) |
| II: | \(\mathrm{C_6H_{12}O_6} → 2~ \text {lactate} + \mathrm{X} \text {ATP}\) |
| III: | \(\mathrm{C_6H_{12}O_6} → 2~ \text {alcohol} + 2 \mathrm{CO_2}+\mathrm{X} \text {ATP}\) |
1. 2
2. 4
3. 6
4. 1
Subtopic: Glycolysis | Glycolysis Regulation |
84%
Level 1: 80%+
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Consider the given two statements:
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
| Statement I: | ATP formation by glycolysis requires oxygen |
| Statement II: | ATP can be formed through substrate-level phosphorylation and this process requires a high-energy phosphate group that is transferred directly to ADP. |
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: Glycolysis | Glycolysis Regulation |
75%
Level 2: 60%+
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Regarding Complex I of the 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: | It is composed of flavin mononucleotide (FMN) and an iron-sulfur (Fe-S)-containing protein. |
| II: | The enzyme in complex I is NADH dehydrogenase. |
| III: | It can pump four hydrogen ions across the membrane from the matrix into the intermembrane space. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: ETS:2 | ETS:1 | ETS |
69%
Level 2: 60%+
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