Select Question Set:
Q. No.Enzyme that catalyses the decarboxylation of pyruvic acid to acetaldehyde is:
1. Pyruvate dehydrogenase
2. Pyruvate kinase
3. Pyruvate decarboxylase
4. Pyruvate translocase
Subtopic: Kreb's Cycle |
62%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The reactions catalysed by pyruvic dehydrogenase in aerobic respiration require the participation of several coenzymes, including:
1. Only I
2. Only II and III
3. Only III
4. Only I and II
| 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%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
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 |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
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%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
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 |
1. Only II
2. Only I and II
3. Only III
4. I, II and III
Subtopic: Kreb's Cycle |
50%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
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 |
66%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
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 |
70%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
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%
Please attempt this question first.
Hints
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 |
90%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
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%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select Question Set:
© 2025 GoodEd Technologies Pvt. Ltd.