Which stage of the Calvin Cycle utilizes ATP?
1. Carboxylation
2. Reduction
3. Regeneration
4. Both 2 and 3
For assimilation of one CO2 molecule via photosynthesis, the energy required in form of ATP and NADPH2 are:
1. 2 ATP and 2 NADPH2
2. 5 ATP and 3 NADPH2
3. 3 ATP and 2 NADPH2
4. 18 ATP and 12 NADPH2.
The first stable product of Calvin cycle is
| 1. | 3-phosphoglycerate |
| 2. | 1, 3 biphosphoglycerate |
| 3. | glyceraldehyde - 3 phosphate |
| 4. | ribulose - 5- phosphate |
Dark reaction depends upon-
| 1. | Presence of darkness |
| 2. | Presence of light |
| 3. | Products of light reactions |
| 4. | Products of biosynthetic phase |
The first dark reaction or CO2 fixation product is-
| 1. | 3C – Organic Acid | 2. | 6C – Organic Acid |
| 3. | 5C – Organic Acid | 4. | 1C – Organic Acid |
Melvin-Calvin used ------- radioactive in-----studies for the discovery of first CO2 fixation product.
| 1. | 14C , Fungal photosynthesis |
| 2. | 14C , Algal photosynthesis |
| 3. | 15N , Fungal photosynthesis |
| 4. | 15N , Algal photosynthesis |
What is the primary acceptor of CO2 in dark reaction?
| 1. | Ketose sugar | 2. | Aldose sugar |
| 3. | Fatty acid | 4. | Sucrose |
Which of the following is not a step of photosynthesis?
a. Decarboxylation
b. Carboxylation
c. Regeneration
d. Reduction
The most crucial step of Calvin cycle-
a. Decarboxylation
b. Carboxylation
c. Regeneration
d. Reduction
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