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Q. No.The reactions catalysed by pyruvic dehydrogenase in aerobic respiration require the participation of several coenzymes, including:
I:
FAD
II:
NAD+
III:
Coenzyme A.
1. Only I
2. Only II and III
3. Only III
4. Only I and II
Subtopic: Aerobic Respiration |
84%
Level 1: 80%+
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In a eukaryotic plant cell, within a mitochondrion, the proton gradient develops across the:
1. Inter-membrane space
2. Inner membrane
3. Outer membrane
4. Matrix
1. Inter-membrane space
2. Inner membrane
3. Outer membrane
4. Matrix
Subtopic: ETS:2 | ETS:1 | ETS |
Level 3: 35%-60%
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In the mitochondrial matrix, pyruvate is broken down to release:
1. Only I and II
2. Only III and IV
3. Only I, II and IV
4. Only I and IV
| I: | Three molecules of CO2 |
| II: | Eight molecules of NADH + H+ |
| III: | Two molecules of FADH2 |
| IV: | One molecule of ATP |
1. Only I and II
2. Only III and IV
3. Only I, II and IV
4. Only I and IV
Subtopic: Fermentation | Aerobic Respiration | Oxidative Phosphorylation |
60%
Level 2: 60%+
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Which enzyme/s takes part in both mitochondrial ETS and Kreb’s cycle?
1. Only II
2. Only I and II
3. Only III
4. I, II and III
| I: | NADH dehydrogenase |
| II: | Succinate dehydrogenase |
| III: | Isocitrate dehydrogenase |
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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