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Q. No.Which of the following are required for the dark reaction of photosynthesis?
A:
Light
B:
Chlorophyll
C:
CO2
D:
ATP
E:
NADPH
Choose the correct answer from the options given below:
1.
B, C and D only
2.
C, D and E only
3.
D and E only
4.
A, B and C only
Subtopic: Dark Reaction: Biosynthetic Phase | Dark Reaction : Calvin Cycle |
65%
From NCERT
NEET - 2024
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How many molecules of ATP and NADPH are required for every molecule of \(\text{CO}_2\) fixed in the Calvin cycle?
| 1. | 2 molecules of ATP and 2 molecules of NADPH |
| 2. | 3 molecules of ATP and 3 molecules of NADPH |
| 3. | 3 molecules of ATP and 2 molecules of NADPH |
| 4. | 2 molecules of ATP and 3 molecules of NADPH |
Subtopic: Dark Reaction : Calvin Cycle |
80%
From NCERT
NEET - 2024
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Given below are two statements:
In the light of the above statements, choose the correct answer from the option given below:
| Statement I: | In \(\text{C}_3\) plants, some \( \text{O}_2\) binds to \(\text{RuBisCO},\) hence \(\text{CO}_2\) fixation is decreased. |
| Statement II: | In \( \text{C}_4\) plants, mesophyll cells show very little photorespiration while bundle sheath cells do not show photorespiration. |
In the light of the above statements, choose the correct answer from the option given below:
| 1. | Both Statement I and Statement II are False |
| 2. | Statement I is True but Statement II is False |
| 3. | Statement I is False but Statement II is True |
| 4. | Both Statement I and Statement II are True |
Subtopic: Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) | Photorespiration |
61%
From NCERT
NEET - 2024
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The photochemical phase of photosynthesis include:
Choose the correct answer from the options given below:
| A. | Oxygen release |
| B. | Formation of NADPH |
| C. | Use of ATP |
| D. | Water splitting |
| E. | Carboxylation |
Choose the correct answer from the options given below:
| 1. | C and E only |
| 2. | A, B and D only |
| 3. | B, C and E only |
| 4. | A, B, C and D only |
Subtopic: Light Reaction: Electron Transport |
65%
From NCERT
NEET - 2024
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Match List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| A | C4 Pathway | I. | \(2\text{H}_2\text{O}\rightarrow4\text{H}^++\text{O}_2=4\text{e}^-\) |
| B. | Light reaction | II. | Ribulose 1,5-bisphosphate |
| C. | Photorespiration | III. | -carbon molecule phosphoenol |
| D. | Calvin cycle | IV. | Phosphoglycolate |
| 1. | A-II, B-I, C-IV, D-III |
| 2. | A-IV, B-II, C-I, D-III |
| 3. | A-III, B-I, C-IV, D-II |
| 4. | A-III, B-IV, C-II, D-I |
Subtopic: Photosystems | Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) | Photorespiration |
82%
From NCERT
NEET - 2024
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How many molecules of ATP and NADPH are required, respectively, for fixation of every CO2 molecule entering the Calvin cycle?
1. 2 and 4
2. 4 and 2
3. 3 and 2
4. 2 and 3
1. 2 and 4
2. 4 and 2
3. 3 and 2
4. 2 and 3
Subtopic: Dark Reaction : Calvin Cycle |
93%
From NCERT
NEET - 2024
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Synthesis of ATP linked to development of a proton gradient across a membrane is:
| 1. | Mass flow hypothesis | 2. | Wobble hypothesis |
| 3. | Chemiosmotic hypothesis | 4. | Rivet Popper hypothesis |
Subtopic: Chemiosmotic hypothesis |
96%
From NCERT
NEET - 2024
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PEP is primary \(CO_2\) acceptor in
| 1. | \(CO_4\) plants |
| 2. | \(CO_3\) plants |
| 3. | \(CO_2\) plants |
| 4. | Both \(CO_3\) and \(CO_4\) plants |
Subtopic: Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
79%
From NCERT
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Match List I with List II
Choose the correct answer from the options given below:
| List I Enzyme |
List II | ||
| A. | RuBISco | I. | Reduces molecular oxygen to form water |
| B. | PEPCase | II. | Catalyzes the phosphorylation of glucose |
| C. | Cytochrome C oxidase | III. | beta‐carboxylation of phosphoenolpyruvate |
| D. | Hexokinase | IV. | Captures atmospheric CO2 |
| 1. | A ‐ IV , B ‐ III , C ‐ II , D ‐ I |
| 2. | A ‐ III , B ‐ II , C ‐ I , D ‐ IV |
| 3. | A ‐ IV, B ‐ III , C ‐ I , D ‐ II |
| 4. | A ‐ IV , B ‐ II , C ‐ I , D ‐ III |
Subtopic: Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
63%
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Photorespiration
Choose the correct answer from the options given below:
1. A and C only
2. C and D only
3. B and C only
4. A and B only
| A. | In C‐3 plants some Oxygen binds to RuBisCO |
| B. | A specialized kind of leaf anatomy (Kranz Anatomy) is seen in plants exhibiting Photorespiration |
| C. | Involves the activities of chloroplast, mitochondria and peroxisomes |
| D. | It was traced by the work of Calvin and his co‐workers |
1. A and C only
2. C and D only
3. B and C only
4. A and B only
Subtopic: Photorespiration |
71%
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