Q. No.Pyruvic acid, the key product of glycolysis can have many metabolic fates. Under aerobic condition, it forms
1.
Lactic acid
2.
CO2 + H2O
3.
Acetyl CoA + CO2
4.
Ethanol + CO2
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Which of the following exhibits the highest rate of respiration?
| 1. Growing shoot apex | 2. Germinating seed |
| 3. Root tip | 4. Leaf bud |
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The stage of cellular respiration that directly involves oxygen is:
| 1. | glycolysis |
| 2. | at the end of ETC |
| 3. | Krebs cycle |
| 4. | the phosphorylation of ADP to form ATP |
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What process in aerobic respiration generates maximum ATP?
| 1. | substrate-level phosphorylation | 2. | chemiosmosis |
| 3. | Krebs cycle | 4. | Pyruvate decarboxylation |
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Consider the steps of glycolysis given in the diagram:
Regarding reaction 3 in the diagram:
| I: | The reaction is a key regulatory point and is also the rate-limiting step. |
| II: | The reaction is freely reversible. |
1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false
In aerobic respiration, oxygen acts as:
I. Terminal electron acceptor
II. Terminal proton acceptor
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
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