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Q. No.How many ATP and NADPH are respectively required to make one molecule of glucose through the Calvin pathway?
1.
3 and 2
2.
6 and 6
3.
9 and 6
4.
18 and 12
Subtopic: Dark Reaction : Calvin Cycle |
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Identify the correctly matched rows:
| C3 | C4 | ||
| I: | Productivity | Low | High |
| II: | CO2 compensation point | Low | Low |
| III: | Temperature optimum | 20 – 25º C | 30 – 45º C |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: C4 Plants Examples |
79%
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Photosystem I is directly associated with:
| 1. | passing electrons to plastoquinone |
| 2. | receiving electrons from plastocyanin |
| 3. | P680 as the chlorophyll a reaction-center |
| 4. | removal of electrons and protons from water |
Subtopic: Light Reaction: Electron Transport |
67%
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The extra ATP required [as compared to NADPH] in Calvin cycle comes from:
| 1. | photosystem II | 2. | photosystem I |
| 3. | cyclic electron flow | 4. | non cyclic electron flow |
Subtopic: Light Reaction: Electron Transport | Light Reaction: Photophosphorylation |
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If chloroplasts are illuminated with sunlight, the lowest pH would be observed in:
| 1. | stroma | 2. | intermembrane space |
| 3. | thylakoid space | 4. | cytosol |
Subtopic: Chemiosmotic hypothesis |
74%
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Radioactive carbon [] was fed to a plant during the day and after a short time was traced to oxaloacetate. The plant used in the experiment will be:
| 1. | C4 plant | 2. | C3 plant |
| 3. | CAM plant | 4. | carnivorous plant |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
82%
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In sugarcane plant, is fixed in malic acid in which the enzyme that fixes is
1. Ribulose biphosphate carboxylase
2. Phosphoenol pyruvic acid carboxylase
3. Ribulose phosphate kinase
4. Fructose phosphatase
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
75%
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The first step for initiation of photosynthesis will be
| 1. | Photolysis of water |
| 2. | Excitement of chlorophyll molecule due to absorption of light |
| 3. | ATP formation |
| 4. | Glucose formation |
Subtopic: Light Reaction: Electron Transport |
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The ‘light reaction’ of photosynthesis in higher plants does not include:
| 1. | Light absorption |
| 2. | Water splitting and oxygen release |
| 3. | Formation of ATP and NADPH |
| 4. | Fixation of carbon |
Subtopic: Dark Reaction: Biosynthetic Phase | Light Reactions |
90%
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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 |
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