Q. No.In the mitochondrial Electron Transport System, Cytochrome c:
| 1. | is a small protein attached to the inner surface of the outer membrane and acts as a mobile carrier for transfer of electrons between complex III and IV. |
| 2. | is a small protein attached to the outer surface of the inner membrane and acts as a mobile carrier for transfer of electrons between complex III and IV. |
| 3. | is a lipid present within the inner membrane and acts as a mobile carrier for transfer of electrons between complex I and II. |
| 4. | is a lipid present within the inner membrane and acts as a mobile carrier for transfer of electrons between complex II and III. |
Subtopic: ETS |
82%
Level 1: 80%+
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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 |
61%
Level 2: 60%+
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During aerobic respiration, the passing on of the electrons removed, as part of the hydrogen atoms, to molecular O2 with simultaneous synthesis of ATP takes place:
1. In the cytoplasm
2. In the mitochondrial matrix
3. In the intermembrane space
4. In the inner membrane of mitochondria
1. In the cytoplasm
2. In the mitochondrial matrix
3. In the intermembrane space
4. In the inner membrane of mitochondria
Subtopic: ETS |
62%
Level 2: 60%+
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Consider the given statements:
| 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 |
86%
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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Cytochrome c in the mitochondrial ETS is located:
| 1. | within the inner mitochondrial membrane |
| 2. | on the outer surface of the inner mitochondrial membrane |
| 3. | on the inner surface of the inner mitochondrial membrane |
| 4. | in the mitochondrial matrix |
Subtopic: ETS |
80%
Level 1: 80%+
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In the mitochondrial Electron Transport System, Ubiquinone receives reducing equivalents from:
I: Complex I
II: Complex II
I: Complex I
II: Complex II
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: ETS |
71%
Level 2: 60%+
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For each ATP molecule produced, the number of H+ ions that must pass through F0 from the intermembrane space to the matrix down the electrochemical proton gradient, is most likely:
| 1. | 2 | 2. | 3 |
| 3. | 4 | 4. | 6 |
Subtopic: ETS |
53%
Level 3: 35%-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 |
Subtopic: ETS:2 | ETS:1 | ETS |
68%
Level 2: 60%+
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Oxidation of one molecule of NADH gives rise to ____ molecules of ATP, while that of one molecule of FADH2 produces _____ molecules of ATP.
| 1. | 3 and 2 respectively | 2. | 2 and 3 respectively |
| 3. | 1 and 2 respectively | 4. | 2 and 1 respectively |
Subtopic: ETS |
95%
Level 1: 80%+
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