Q. No.Which of the following yield maximum energy :
1. Glycolysis in a sprinter
2. Aerobic respiration in germinating seeds
3. Fermentation by yeast
4. Anaerobic respiration
1. Glycolysis in a sprinter
2. Aerobic respiration in germinating seeds
3. Fermentation by yeast
4. Anaerobic respiration
Which of these statements is incorrect?
1. Enzymes of TCA cycle are present in mitochondrial matrix.
2. Glycolysis occurs in cytosol.
3. Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
4. Oxidative phosphorylation takes place in outer mitochondrial membrane.
How many ATP molecules are produced by aerobic oxidation of one molecule of glucose?
| 1. | 2 | 2. | 4 |
| 3. | 38 | 4. | 34 |
In which one of the following do the two names refer to one and the same thing : -
1. Krebs cycle and Calvin cycle
2. Tricarboxylic acid cycle and citric acid cycle
3. Citric acid cycle and Calvin cycle
4. Tricarboxylic acid cycle and urea cycle
Glycolysis is :
1. Oxidation of glucose to glutamate
2. Conversion of pyruvate to citrate
3. Oxidation of glucose to pyruvate
4. Conversion of glucose to haem
Pyruvate dehydrogenase activity during aerobic respiration requires:
| 1. | Calcium | 2. | Iron |
| 3. | Cobalt | 4. | Magnesium |
The enzyme lactate dehydrogenase catalyses:
1. the oxidation of pyruvate to lactate to regenerate NAD+.
2. the reduction of pyruvate to lactate to regenerate NAD+.
3. the reduction of pyruvate to lactate to regenerate NADH.
4. the oxidation of pyruvate to lactate to regenerate NADH.
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In the citric acid cycle:
| 1. | oxygen is used to oxidise the acetyl group carbons of acetyl-CoA in the citric acid cycle. |
| 2. | three molecules of NADH and one molecule of FADH2 are produced in one turn. |
| 3. | oxygen is not used, so the cycle can occur in anaerobic conditions. |
| 4. | water is formed during the complete oxidation of glucose. |
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For aerobic cellular respiration, identify the correctly matched row:
|
Phase |
Cost,per glucose |
Gain,per glucose |
|
|
1. |
Glycolysis |
2 ATP |
4 ATP, 1 NADH |
|
2. |
Oxidation of pyruvic acid |
4 ATP |
2 NADH |
|
3. |
Krebs cycle |
2 ATP |
2 ATP, 6 NADH, 1 FADH2 |
|
4. |
Electron transport |
2 ATP |
34 ATP |
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