Identify the correct statement:
1. | The light reactions provide ATP and NADPH to the Calvin cycle. |
2. | The light reactions provide to the Calvin cycle. |
3. | The light reactions supply oxygen to the Calvin cycle. |
4. | Calvin cycle is in no way dependent on the light reactions. |
The primary function of the Calvin cycle is to:
1. use ATP to release carbon dioxide
2. use NADPH to release carbon dioxide
3. split water and release oxygen
4. fix inorganic carbon to simple sugars
What is true for both light reactions and the Calvin cycle of photosynthesis in plants?
1. Production of molecular oxygen
2. Depend directly or indirectly on light
3. Requirement of ATP
4. Production of NADPH
Neither light dependent reaction nor Calvin cycle in photosynthesis in plants require:
1. ATP | 2. NADPH |
3. Enzymes | 4. Glucose |
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
Given below is the schematic diagram of Calvin cycle taking place in a certain plant. ATP used by this plant is radioactively labeled. One turn of the cycle is allowed to happen. Radioactivity would be seen in all except:
1. A
2. B
3. C and D
4. E
Oxidation of pyruvate occurs in mitochondria in pjotosthesizing cells as well. In such this occurs:
1. in photosynthetic cells in the light, while photosynthesis occurs concurrently
2. in non-photosynthesizing cells only
3.in photosynthesizing cells in dark periods and in other tissues all the time
4. in photosynthesizing cells in the light and in other tissues in the dark
For the synthesis of glucose, the source of hydrogen atoms is:
1. | Water | 2. | NADPH |
3. | FADH2 | 4. | Monosaccharides |
In cyclic photophosphorylation, the primary electron acceptor is:
1. An iron-sulfur protein
2. Plastocyanin
3. Plastoquinone
4. Water
If chloroplasts are illuminated with sunlight, the lowest pH would be observed in:
1. | stroma | 2. | intermembrane space |
3. | thylakoid space | 4. | cytosol |