I: | Carbon reactions during photosynthesis in higher plants are called as dark reactions. |
II: | They occur in darkness and they are not light-dependent. |
1. | Both I and II are correct and II explains I |
2. | Both I and II are correct but II does not explain I |
3. | I is correct but II is incorrect |
4. | I is incorrect but II is correct |
How many carbon atoms does the primary carbon dioxide acceptor have in C3 photosynthesis?
1. | 2 | 2. | 3 |
3. | 4 | 4. | 5 |
How many ATP and NADPH are respectively required to make one molecule of glucose through the Calvin pathway?
1. 3 and 2 | 2. 6 and 6 |
3. 9 and 6 | 4. 18 and 12 |
The pathway:
1. is common to all plants
2. takes place in mesophyll cells in plants
3. takes place in bundle sheath cells in plants
4. does not take place in CAM plants
The most common enzyme in the world is:
1. | PEP carboxylase | 2. | Pyruvate dehydrogenase |
3. | RuBisCO | 4. | Collagenase |
The reactions of the Calvin cycle can take place as long as which of the following products of the light dependent reactions are available?
1. | Water and Glucose | 2. | Water and ATP |
3. | Oxygen and Carbon dioxide | 4. | ATP and NADPH |
The number of molecules of NADPH and ATP required respectively to reduce six molecules of carbon dioxide to glucose in Calvin cycle?
1. 6 and 6 | 2. 12 and 12 |
3. 12 and 18 | 4. 18 and 12 |
Consider the following two statements regarding RuBisCO:
I: | When carbon dioxide is the substrate, the product of the carboxylase reaction is finally two molecules of glycerate-3-phosphate. |
II: | When molecular oxygen is the substrate, the products of the oxygenase reaction are two molecules of phosphoglycolate. |
1. | Only I is correct | 2. | Only II is correct |
3. | Both I and II are correct | 4. | Both I and II are incorrect |
Which of the following must occur in the biochemical pathway of Calvin cycle?
1. addition of a pair of electrons from NADPH
2. inactivation of RuBP carboxylase enzyme
3. regeneration of ATP from ADP
4. regeneration of RuBP
The number of turns of Calvin cycle required to produce one molecule of Glyceraldehyde 3 Phosphate is:
1. | 1 | 2. | 2 |
3. | 3 | 4. | 6 |