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 |
Which of the following exhibits the highest rate of respiration?
1. Growing shoot apex | 2. Germinating seed |
3. Root tip | 4. Leaf bud |
What is the end product of glycolysis?
1. NADH | 2. ATP |
3. G3P | 4. Pyruvate |
The outputs of the Krebs cycle do not include:
1. NADP | 2. |
3. ATP | 4. |
The products of fermentation do not include:
1. | CO2 | 2. | O2 |
3. | ethanol | 4. | lactate |
Oxidative decarboxylation of pyruvate produces:
1. | 2. Citrate |
3. Acetyl-CoA | 4. G3P |
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 |
What process in aerobic respiration generates maximum ATP?
1. | substrate-level phosphorylation | 2. | chemiosmosis |
3. | Krebs cycle | 4. | Pyruvate decarboxylation |
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 |