- 1(current)
Q. No.Production of NADPH in a chloroplast takes place during which photophosphorylation:
1. cyclic
2. non-cyclic
3. series
4. substrate-level
Subtopic: Â Light Reaction: Photophosphorylation |Â Light Reactions :1 |
 91%
Level 1: 80%+
Please attempt this question first.
Hints
What is photophosphorylation?
| 1. | The synthesis of ATP using light energy during photosynthesis. |
| 2. | The production of glucose directly from sunlight. |
| 3. | The splitting of water molecules to release oxygen. |
| 4. | The generation of ATP without the use of light. |
Subtopic: Â Light Reaction: Photophosphorylation |
 90%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Photolysis of water and liberation of oxygen as a product in photosynthesis is associated with
1. pigment system I
2. pigment system II
3. cytochrome B6
4. plastocyanin
1. pigment system I
2. pigment system II
3. cytochrome B6
4. plastocyanin
Subtopic: Â Light Reaction: Photophosphorylation |
 90%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
| Statement I: | The Z scheme of electron transport involves both Photosystem I and Photosystem II. |
| Statement II: | Non-cyclic photophosphorylation generates both ATP and NADPH. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Â Light Reaction: Photophosphorylation |
 89%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Consider the two given statements:
| Assertion (A): | The cyclic flow hence, results only in the synthesis of ATP, but not of NADPH + H+. |
| Reason (R): | The excited electron does not pass on to NADP+ but is cycled back to the PS I complex through the electron transport chain. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | (A) is True but (R) is False |
| 3. | (A) is False but (R) is True |
| 4. | Both (A) and (R) are True but (R) does not explain (A) |
Subtopic: Â Light Reaction: Photophosphorylation |
 87%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Synthesis of ATP from ADP and inorganic phosphate in the presence of light is known as-
1. phosphorylation
2. photo-phosphorylation
3. photorespiration
4.photooxidation
Subtopic: Â Light Reaction: Photophosphorylation |
 85%
Level 1: 80%+
Hints
In __________, electrons that have been energized by light contribute their energy to add phosphate to ADP, producing ATP.
1. crassulacean acid metabolism
2. the Calvin cycle
3. photorespiration
4. photophosphorylation
1. crassulacean acid metabolism
2. the Calvin cycle
3. photorespiration
4. photophosphorylation
Subtopic: Â Light Reaction: Photophosphorylation |
 84%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The major limitation of cyclic photophosphorylation is that it does not:
| 1. | yield ATP |
| 2. | yield NADPH |
| 3. | yield either ATP or NADPH |
| 4. | provide energy for the cell |
Subtopic: Â Light Reaction: Photophosphorylation |
 80%
Level 1: 80%+
Please attempt this question first.
Hints
Energy is transferred from the light reaction step to the dark reaction step by
1. chlorophyll
2. ADP
3. ATP
4. RuBP
Subtopic: Â Introduction |Â Historical View: Experiments |Â Chloroplast Structure |Â Photosynthetic Pigments |Â Redtrop Experiment |Â Emerson's Enhancement Experiment |Â Photosystems |Â Light Reaction: Electron Transport |Â Light Reaction: Photophosphorylation |Â Dark Reaction: Biosynthetic Phase |
 83%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
| Assertion (A): | RuBisCO has affinity for both the gases: CO2 and O2. |
| Reason (R): | RuBisCO is the most abundant enzyme in the biosphere. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | (A) is False, but (R) is True. |
Subtopic: Â Light Reaction: Photophosphorylation |
 81%
Level 1: 80%+
Hints
- 1(current)
Q. No.
© 2026 GoodEd Technologies Pvt. Ltd.