Regarding ATP synthesis through chemiosmosis in chloroplasts:
I:
The protons or hydrogen ions that are produced by the splitting of water accumulate within the lumen of the thylakoids.
II:
The primary accepter of electron which is located towards the outer side of the membrane transfers its electron not to an electron carrier but to an H carrier.
III:
The NADP reductase enzyme is located on the stroma side of the membrane.
1.
Only I and II are correct
2.
Only I and III are correct
3.
Only II and III are correct
4.
I, II and III are correct
Subtopic: Â Chemiosmotic hypothesis |
 82%
From NCERT
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The biosynthetic phase of photosynthesis is called as the dark reaction because:
| I. | the biosynthetic process continues for the entire time when the light is unavailable. |
| II. | the biosynthetic process stops when the light becomes available again. |
| 1. | Only I is correct |
| 2. | Both I and II are incorrect |
| 3. | Only II is correct |
| 4. | Both I and II are correct |
Subtopic: Â Dark Reaction: Biosynthetic Phase |
 69%
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Out of the given two statements:
| Statement I: | The Calvin pathway occurs in all photosynthetic plants. |
| Statement II: | All photosynthetic plants have PGA as the first product of CO2 fixation. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Statement I is correct; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Â Dark Reaction : Calvin Cycle |
 75%
From NCERT
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The reaction centre in PS II has an absorption maxima at:
| 1. | 780 nm | 2. | 680 nm |
| 3. | 700 nm | 4. | 660 nm |
Subtopic: Â Light Reactions |
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From NCERT
NEET - 2023
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How many ATP and NADPH2 are required for the synthesis of one molecule of glucose during Calvin cycle?
| 1. | 18 ATP and 16 NADPH2 |
| 2. | 12 ATP and 12 NADPH2 |
| 3. | 18 ATP and 12 NADPH2 |
| 4. | 12 ATP and 16 NADPH2 |
Subtopic: Â Dark Reaction : Calvin Cycle |
 89%
From NCERT
NEET - 2023
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Which of the following combinations is required for chemiosmosis?
| 1. | Proton pump, electron gradient, NADP synthase. |
| 2. | Membrane, proton pump, proton gradient, ATP synthase. |
| 3. | Membrane, proton pump, proton gradient, NADP synthase |
| 4. | Proton pump, electron gradient, ATP synthase |
Subtopic: Â Chemiosmotic hypothesis |
 80%
From NCERT
NEET - 2023
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Match List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Chlorophyll a | (I) | Yellow to yellow orange |
| (B) | Chlorophyll b | (II) | Yellow green |
| (C) | Xanthophyll | (III) | Blue green |
| (D) | Carotenoids | (IV) | Yellow |
| Options: | (A) | (B) | (C) | (D) |
| 1. | III | II | IV | I |
| 2. | III | I | IV | II |
| 3. | II | III | I | IV |
| 4. | IV | III | II | I |
Subtopic: Â Pigments |
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From NCERT
NEET - 2023
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Given below are two statements :
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | RuBisCO is the most abundant enzyme in the world. |
| Statement II: | Photorespiration does not occur in C4 plants. |
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Â Photorespiration |
 85%
From NCERT
NEET - 2023
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Which out of the following statements is incorrect?
| 1. | Grana lamellae have both PS I and PS II |
| 2. | Cyclic photophosphorylation involved both PS I and PS II |
| 3. | Both ATP and NADPH + H+ are synthesised during non-cyclic photophosphorylation |
| 4. | Stroma lamellae lack PS II and NAP reductase |
Subtopic: Â Light Reaction: Electron Transport |
 81%
From NCERT
NEET - 2023
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Given below are two statements :
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is correct but statement II is incorrect
2. Statement I is incorrect but statement II is correct
3. Both statement I and statement II are correct
4. Both statement I and statement II are incorrect
| Statement I: | RuBisCO is the most abundant enzyme in the world. |
| Statement II: | Photorespiration does not occur in C4 plants. |
1. Statement I is correct but statement II is incorrect
2. Statement I is incorrect but statement II is correct
3. Both statement I and statement II are correct
4. Both statement I and statement II are incorrect
Subtopic: Â Photorespiration |
 89%
From NCERT
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