- 1(current)
Q. No.The enzyme, decarboxylase, catalyses the following step :
| 1. | conversion of citric acid to cis aconitic acid |
| 2. | fumaric acid to malic acid |
| 3. | oxalosuccinic acid to -ketoglutaric acid |
| 4. | malic acid to oxaloacetic acid |
Subtopic: Kreb's Cycle |
74%
Level 2: 60%+
Hints
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 |
Subtopic: Kreb's Cycle |
91%
Level 1: 80%+
Hints
The number of molecules of carbon dioxide produced by three turns of the Krebs cycle would be:
| 1. | 3 | 2. | 6 |
| 3. | 12 | 4. | 18 |
Subtopic: Kreb's Cycle |
67%
Level 2: 60%+
Hints
Coenzyme A, formed in part from one of the B vitamins, functions to:
| 1. | Oxidize pyruvate | 2. | Reduce pyruvate |
| 3. | Activate the acetyl group | 4. | Facilitate electron flow |
Subtopic: Kreb's Cycle |
52%
Level 3: 35%-60%
Hints
In the citric acid cycle, a molecule of GTP is formed during the conversion of:
| 1. | - ketoglutarate to Succinyl-CoA |
| 2. | Succinyl-CoA to succinate |
| 3. | Succinate to fumarate |
| 4. | Fumarate to malate |
Subtopic: Kreb's Cycle |
69%
Level 2: 60%+
Hints
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. |
Subtopic: Kreb's Cycle |
79%
Level 2: 60%+
Hints
- 1(current)
Q. No.
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