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Q. No."Although Photosystem II is named 'II', it actually functions before Photosystem I in the linear electron flow pathway, making the numerical designation opposite to the functional sequence."
1. True
2. False
1. True
2. False
Subtopic: Light Reactions |
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Level 2: 60%+
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During the light reaction of photosynthesis, the photolysis of water results in:
1. Release of oxygen, generation of NADPH, and synthesis of glucose molecules
2. Release of carbon dioxide, generation of FADH2, and reduction of NADP+
3. Consumption of oxygen, generation of NADH, and synthesis of ATP molecules
4. Release of oxygen, generation of NADPH, and establishment of proton gradient
1. Release of oxygen, generation of NADPH, and synthesis of glucose molecules
2. Release of carbon dioxide, generation of FADH2, and reduction of NADP+
3. Consumption of oxygen, generation of NADH, and synthesis of ATP molecules
4. Release of oxygen, generation of NADPH, and establishment of proton gradient
Subtopic: Light Reactions |
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Level 2: 60%+
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In cyclic photophosphorylation, the following is produced:
| 1. | ATP, NADPH and oxygen |
| 2. | ATP only without NADPH |
| 3. | NADPH and oxygen only |
| 4. | Glucose and water molecules |
Subtopic: Light Reaction: Electron Transport | Light Reactions |
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Level 1: 80%+
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Photosystem II is involved in:
| 1. | Reduction of NADP to NADPH |
| 2. | Fixation of carbon dioxide |
| 3. | Synthesis of ATP molecules only |
| 4. | Photolysis of water releasing oxygen |
Subtopic: Light Reaction: Electron Transport | Light Reactions |
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Level 1: 80%+
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Light-harvesting complexes are primarily composed of:
| 1. | Pigments bound to specific proteins |
| 2. | Lipids bound tightly to carotenoids |
| 3. | Carbohydrates surrounding PS-I core |
| 4. | Starch granules linked to thylakoids |
Subtopic: Light Reactions |
91%
Level 1: 80%+
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PS I is called P700 and PS II is called P680 because:
1. They represent the sequence of electron flow
2. They denote the wavelength of maximum absorption of their reaction-centre chlorophyll a
3. They indicate the number of chlorophyll molecules present
4. They correspond to their position on the thylakoid membrane
1. They represent the sequence of electron flow
2. They denote the wavelength of maximum absorption of their reaction-centre chlorophyll a
3. They indicate the number of chlorophyll molecules present
4. They correspond to their position on the thylakoid membrane
Subtopic: Light Reactions |
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Level 1: 80%+
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Which of the following is NOT a feature of light reaction of photosynthesis?
| 1. | Occurs in thylakoid membrane |
| 2. | Splitting of water |
| 3. | Formation of ATP and NADPH |
| 4. | Fixation of CO₂ |
Subtopic: Light Reactions |
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Level 1: 80%+
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There is a clear division of labour within the chloroplast where:
1. Only A is correct
2. Only B is correct
3. Both A and B are correct
4. Both A and B are incorrect
| A: | The membrane system is the site for enzymatic reactions that synthesise sugar, which in turn forms starch. |
| B: | Stroma is responsible for trapping the light energy and also for the synthesis of ATP and NADPH. |
1. Only A is correct
2. Only B is correct
3. Both A and B are correct
4. Both A and B are incorrect
Subtopic: Light Reactions |
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Level 3: 35%-60%
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Consider the two statements:
| Assertion (A): | The protons and oxygen formed by the splitting of water during oxygenic photosynthesis is higher plants are released in the lumen of the thylakoid. |
| Reason (R): | The water splitting complex is associated with the PS II, which itself is physically located on the inner side of the membrane of the thylakoid. |
| 1. | Both (A) and (R) are True and (R) explains (A) |
| 2. | Both (A) and (R) are True, but (R) does not explain (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Light Reactions |
73%
Level 2: 60%+
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