Q. No.Which of the following is a major source of electrons for the electron transport chain?
1. H2O
2. ATP
3. NADH
4. ATP synthase
1. H2O
2. ATP
3. NADH
4. ATP synthase
Subtopic: ETS |
63%
From NCERT
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In the process of ___________, electron transport and ATP synthesis are coupled by a proton gradient across the inner mitochondrial membrane.
1. chemiosmosis
2. deamination
3. anaerobic respiration
4. glycolysis
1. chemiosmosis
2. deamination
3. anaerobic respiration
4. glycolysis
Subtopic: Oxidative Phosphorylation | ETS |
85%
From NCERT
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Which multiprotein complex in the electron transport chain is responsible for reducing molecular oxygen?
| 1. | complex I (NADH–ubiquinone oxidoreductase) |
| 2. | complex II (succinate–ubiquinone reductase) |
| 3. | complex III (ubiquinone– cytochrome c oxidoreductase) |
| 4. | complex IV (cytochrome c oxidase) |
Subtopic: ETS |
80%
From NCERT
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Where is the respiratory electron transport system (ETS) located in plants?
1. Mitochondrial matrix
2. Outer mitochondrial membrane
3. Inner mitochondrial membrane
4. Intermembrane space
Subtopic: ETS:1 | ETS |
84%
From NCERT
NEET - 2019
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Which of the following statements regarding mitochondria is incorrect?
| 1. | Mitochondrial matrix contains single circular DNA molecule and ribosomes. |
| 2. | Outer membrane is permeable to monomers of carbohydrates, fats, and proteins. |
| 3. | Enzymes of electron transport are embedded in the outer membrane. |
| 4. | Inner membrane is convoluted with infoldings. |
Subtopic: ETS |
74%
From NCERT
NEET - 2019
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Which of the following statements is incorrect?
| 1. | ATP is synthesized through complex V. |
| 2. | Oxidation-reduction reactions produce a proton gradient in respiration. |
| 3. | During aerobic respiration, the role of oxygen is limited to the terminal stage. |
| 4. | In ETC (Electron Transport Chain), one molecule of NADH+H+ gives rise to 2 ATP molecules, and one FADH2 gives rise to 3 ATP molecules. |
Subtopic: ETS |
85%
From NCERT
NEET - 2021
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Match List-I with List II
| List-I | List-II | ||
| (a) | ETS complex-I | (i) | Cyt bc1 |
| (b) | ETS complex-II | (ii) | Cyt a,a3 and 2 copper centres |
| (c) | ETS complex-III | (iii) | NADH dehydrogenase |
| (d) | ETS complex-IV | (iv) | Ubiquinone and FADH2 dehydrogenase |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iv) | (iii) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (iii) | (ii) | (i) | (iv) |
| 4. | (iii) | (iv) | (i) | (ii) |
Subtopic: ETS |
85%
From NCERT
NEET - 2022
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Identify the cytochrome which acts as a mobile carrier for the transfer of electrons between complex III and IV?
| 1. | Cytochrome a | 2. | Cytochrome a3 |
| 3. | Cytochrome b c1 | 4. | Cytochrome c |
Subtopic: ETS |
78%
From NCERT
NEET - 2022
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In the mitochondrial ETS, ubiquinone receives reducing equivalents from:
I: Complex I
II: Complex II
III: Complex III
IV: Complex IV
1. Only I and II
2. Only III and IV
3. Only I, II and III
4. Only II, III and IV
I: Complex I
II: Complex II
III: Complex III
IV: Complex IV
1. Only I and II
2. Only III and IV
3. Only I, II and III
4. Only II, III and IV
Subtopic: ETS |
81%
From NCERT
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Which of the following is the complex III of the mitochondrial ETS?
1. NADH dehydrogenase
2. Succinic dehydrogenase
3. Cytochrome bc1 complex
4. Cytochrome c oxidase
1. NADH dehydrogenase
2. Succinic dehydrogenase
3. Cytochrome bc1 complex
4. Cytochrome c oxidase
Subtopic: ETS |
90%
From NCERT
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