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Q. No.What is the primary reason why the biosynthetic phase of photosynthesis is often referred to as the "dark reaction"?
| 1. | It occurs only in the absence of light. |
| 2. | It does not directly depend on light but uses products of the light reaction. |
| 3. | It uses ATP and NADPH to fix CO2. |
| 4. | It is an irreversible reaction that happens during the night. |
Subtopic: Â Chloroplast Structure |Â Dark Reaction: Biosynthetic Phase |
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Level 1: 80%+
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The site of light reactions and dark reactions in chloroplasts are:
| 1. | Both occur in the stroma. |
| 2. | Light reactions occur in the thylakoid membranes, and dark reactions occur in the stroma. |
| 3. | Light reactions occur in the stroma, and dark reactions occur in the thylakoid membranes. |
| 4. | Both occur in the thylakoid membranes. |
Subtopic: Â Light Reaction: Electron Transport |Â Dark Reaction: Biosynthetic Phase |
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Level 1: 80%+
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The following processes occur during photosynthesis:
(i) Reduction of carbon dioxide
(ii) The splitting of water
(iii) The synthesis of glucose
(iv) Release of oxygen
(v) Formation of ATP
Which one of the following combinations is correct for the light phase?
1. i, ii and iii
2. iii, iv and v
3. i, iii and iv
4. ii, iv and v
Subtopic: Â Dark Reaction: Biosynthetic Phase |Â Light Reactions :1 |Â Light Reactions |
 82%
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Which of the following statements is true about the dark reaction?
| 1. | ribulose-1, 5-bisphosphate carboxylase/oxygenase or RUBISCO is the CO2-fixing enzyme for this process. |
| 2. | the reactions occur in the chloroplast stroma. |
| 3. | the ATP and NADPH required for this process are produced by the light reaction of photosynthesis. |
| 4. | all of the statements are true. |
Subtopic: Â Dark Reaction: Biosynthetic Phase |
 89%
Level 1: 80%+
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Which one option is correct for Dark reactions?
| 1. | Occurs in dark |
| 2. | Not depend on light |
| 3. | Dependent on products of light reaction |
| 4. | Occurs in lumen in thylakoid |
Subtopic: Â Dark Reaction: Biosynthetic Phase |
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Level 1: 80%+
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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 |
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Level 2: 60%+
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- 1(current)
Q. No.
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