In the Z-scheme, transfer of electrons starts from:
1. the PS II uphill to the acceptor, down the electron transport chain to PS I, transferred to another acceptor after excitation, and finally downhill to NADP+ reducing it to NADPH + H+.
2. the PS II downhill to the acceptor, down the electron transport chain to PS I, transferred to another acceptor after excitation, and finally uphill to NADP+ reducing it to NADPH + H+.
3. the PS I uphill to the acceptor, down the electron transport chain to PS II, transferred to another acceptor after excitation, and finally downhill to NADP+ reducing it to NADPH + H+.
4. the PS I downhill to the acceptor, down the electron transport chain to PS II, transferred to another acceptor after excitation, and finally uphill to NADP+ reducing it to NADPH + H+.
Subtopic: Light Reaction: Electron Transport |
82%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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The splitting of water during oxygenic photosynthesis in higher plants:
I. is associated with PS II
II. releases one molecule of oxygen on splitting of two water molecules
III. releases protons and oxygen in the thylakoid lumen
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
I. is associated with PS II
II. releases one molecule of oxygen on splitting of two water molecules
III. releases protons and oxygen in the thylakoid lumen
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: Light Reactions |
74%
From NCERT
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Consider the given two statements:
| Statement I: | When only PS I is functional, the electron is circulated within the photosystem and the phosphorylation occurs due to cyclic flow of electrons. |
| Statement II: | Cyclic photophosphorylation also occurs when only light of wavelengths beyond 680 nm are available for excitation. |
| 1. | Both Statement I and Statement II are correct |
| 2. | Both Statement I and Statement II are incorrect |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Light Reaction: Electron Transport |
80%
From NCERT
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Regarding the thylakoid membrane:
| I: | Plastoquinone is located within the membrane |
| II: | Plastocyanin is located on the inner lumen side of the membrane |
| III: | NADP reductase 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: Chemiosmotic hypothesis |
62%
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Consider the given two statements:
Statement I: CF1 particle of ATP synthase makes ATP molecules.
Statement II: CF1 particle of ATP synthase is embedded in the thylakoid membrane and forms a transmembrane channel that carries out facilitated diffusion of protons across the membrane.
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Statement I: CF1 particle of ATP synthase makes ATP molecules.
Statement II: CF1 particle of ATP synthase is embedded in the thylakoid membrane and forms a transmembrane channel that carries out facilitated diffusion of protons across the membrane.
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Subtopic: Chemiosmotic hypothesis |
68%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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The correct chronological stages of the Calvin cycle will be:
| 1. | Carboxylation → Reduction →Regeneration |
| 2. | Carboxylation → Regeneration →Reduction |
| 3. | Regeneration → Reduction → Carboxylation |
| 4. | Reduction → Regeneration → Carboxylation |
Subtopic: Dark Reaction : Calvin Cycle |
93%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
A C3 plant was provided carbon dioxide labelled with a radioactive isotope. The amount of radioactivity was measured in chloroplasts. In which of the following molecules do you expect the radioactivity to appear first as the process of photosynthesis proceeds in this plant?
| 1. | OAA | 2. | PEP |
| 3. | PGA | 4. | RuBP |
Subtopic: Dark Reaction : Calvin Cycle |
69%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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RuBP is:
| 1. | 2 carbon ketose sugar | 2. | 2 carbon aldose sugar |
| 3. | 5 carbon ketose sugar | 4. | 5 carbon aldose sugar |
Subtopic: Dark Reaction : Calvin Cycle |
87%
From NCERT
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Subtopic: C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
83%
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
C4 plants are special. Which of the following will be true for C4 plants?
| a. | They have a special type of leaf anatomy |
| b. | They tolerate higher temperature |
| c. | They show a response to high light intensities |
| d. | They lack a process called photorespiration |
| e. | They have greater productivity of biomass |
| 1. | All except [e] |
| 2. | [b], [c] and [d] only |
| 3. | All |
| 4. | [a], [b], [d] and [e] only |
Subtopic: C4 Cycle (Hatch & Slack Pathway) | Photorespiration |
77%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
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NEET 2023 - Target Batch - Aryan Raj Singh
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