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Q. No.The reaction 2 in the given figure is catalysed by the enzyme:
1. Pyruvate decarboxylase
2. Pyruvate kinase
3. Pyruvate dehydrogenase
4. Pyruvate synthetase
Subtopic: Fermentation |
69%
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During fermentation Yeasts poison themselves to death when the concentration of alcohol reaches about:
1. 5 percent
2. 13 per cent
3. 22 per cent
4. 44 per cent
1. 5 percent
2. 13 per cent
3. 22 per cent
4. 44 per cent
Subtopic: Fermentation |
96%
From NCERT
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In aerobic respiration, passing on of the electrons removed as part of the hydrogen atoms to molecular O2 with simultaneous synthesis of ATP, is associated with:
1. Outer mitochondrial membrane
2. Inner mitochondrial membrane
3. Mitochondrial matrix
4. Cytosol
1. Outer mitochondrial membrane
2. Inner mitochondrial membrane
3. Mitochondrial matrix
4. Cytosol
Subtopic: Aerobic Respiration |
84%
From NCERT
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Pyruvate, which is formed by the glycolytic catabolism of carbohydrates in the cytosol:
| 1. | undergoes oxidative decarboxylation in cytosol itself by a complex set of reactions catalysed by pyruvic kinase. |
| 2. | undergoes reduction in cytosol itself by a complex set of reactions catalysed by pyruvic dehydrogenase. |
| 3. | undergoes oxidative decarboxylation in mitochondrial matrix by a complex set of reactions catalysed by pyruvic dehydrogenase. |
| 4. | undergoes oxidative phosphorylation in mitochondrial matrix by a complex set of reactions catalysed by pyruvic decarboxylase. |
Subtopic: Aerobic Respiration |
76%
From NCERT
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In the TCA cycle, a molecule of GTP is synthesised:
1. During the first oxidative decarboxylation reaction
2. During the second oxidative decarboxylation reaction
3. During the condensation of acetyl group with oxaloacetic acid (OAA) and water to yield citric acid
4. During the conversion of succinyl-CoA to succinic acid
1. During the first oxidative decarboxylation reaction
2. During the second oxidative decarboxylation reaction
3. During the condensation of acetyl group with oxaloacetic acid (OAA) and water to yield citric acid
4. During the conversion of succinyl-CoA to succinic acid
Subtopic: Kreb's Cycle |
90%
From NCERT
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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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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%
From NCERT
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The reduced ubiquinone (ubiquinol) in the mitochondrial ETS is oxidised with the transfer of electrons to:
1. cytochrome c via succinic dehydrogenase
2. cytochrome c via cytochrome bc1 complex
3. cytochrome bc1 via cytochrome aa3
4. cytochrome bc1 via cytochrome b6f
1. cytochrome c via succinic dehydrogenase
2. cytochrome c via cytochrome bc1 complex
3. cytochrome bc1 via cytochrome aa3
4. cytochrome bc1 via cytochrome b6f
Subtopic: ETS |
76%
From NCERT
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In the Complex I of mitochondrial ETS, electrons from NADH are first passed on to:
1. Fe-S
2. FMN
3. FAD
4. Cua
1. Fe-S
2. FMN
3. FAD
4. Cua
Subtopic: ETS |
75%
From NCERT
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