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Q. No.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
Subtopic: ETS |
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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 |
69%
From NCERT
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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%
From NCERT
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Fe-S proteins, involved in oxidation-reduction reactions of electron transport in mitochondria, are a part of all of the following except:
1. Complex I
2. Complex II
3. Complex III
4. Complex IV
1. Complex I
2. Complex II
3. Complex III
4. Complex IV
Subtopic: ETS |
68%
From NCERT
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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 |
52%
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The RQ [respiratory quotient]:
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: | is 1, when carbohydrates are used as substrate and are completely oxidized |
| II: | is less than 1, when fats are used as substrate and are completely oxidized |
| III: | is more than 1, when proteins are used as substrate and are completely oxidized |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Respiratory Quotient |
84%
From NCERT
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Yeasts carry out ethanol fermentation but poison themselves to death when the concentration of alcohol reaches about:
| 1. | 5 per cent. | 2. | 13 per cent. |
| 3. | 20 per cent. | 4. | 45 per cent. |
Subtopic: Fermentation |
93%
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Regeneration of NAD+ is accomplished by:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | Ethanol fermentation |
| II: | Lactate fermentation |
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Fermentation |
83%
From NCERT
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If metabolism consists solely of lipids, the respiratory quotient is approximately:
| 1. | 0.7 | 2. | 0.8 |
| 3. | 0.9 | 4. | 1.0 |
Subtopic: Respiratory Quotient |
81%
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What is number of net ATP molecules gained during fermentation of one glucose molecule in human muscle cells?
1. 2
2. 4
3. 6
4. 10
1. 2
2. 4
3. 6
4. 10
Subtopic: Glycolysis |
84%
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