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Q. No.

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:  Dark Reaction : Calvin Cycle |
 90%
Level 1: 80%+
NEET - 2023
Hints
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:  Chemiosmotic hypothesis |
 80%
Level 1: 80%+
NEET - 2023
Hints
Match List-I with List-II
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
Choose the correct answer from the options given below:
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:  Pigments |
 84%
Level 1: 80%+
NEET - 2023
Hints
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Given below are two statements :
Statement I: RuBisCO is the most abundant enzyme in the world.
Statement II:  Photorespiration does not occur in C4 plants.
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
Subtopic:  Photorespiration |
 86%
Level 1: 80%+
NEET - 2023
Hints
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:  Light Reaction: Electron Transport |
 80%
Level 1: 80%+
NEET - 2023
Hints
The reaction centre in PS II has an absorption maxima at:
1. 780 nm 2. 680 nm
3. 700 nm  4. 660 nm
Subtopic:  Light Reactions |
 90%
Level 1: 80%+
NEET - 2023
Hints
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Identify the correct statements regarding chemiosmotic hypothesis:
(a) Splitting of the water molecule takes place on the inner side of the membrane.
(b) Protons accumulate within the lumen of the thylakoids.
(c) The primary acceptor of electrons transfers the electrons to an electron carrier.
(d) NADP reductase enzyme is located on the stroma side of the membrane.
(e) Protons increase in number in stroma.
Choose the correct answer from the options given below:
1. (a), (b) and (e)
2. (a), (b) and (d)
3. (b), (c) and (d)
4. (b), (c) and (e)
Subtopic:  Chemiosmotic hypothesis |
 77%
Level 2: 60%+
NEET - 2022
Hints
When one CO2 molecule is fixed as one molecule of triose phosphate, which of the following photochemically made, high energy chemical intermediates are used in the reduction phase?
1. 1 ATP + 1 NADPH
2. 1 ATP + 2 NADPH
3. 2 ATP + 1 NADPH
4. 2 ATP + 2 NADPH
Subtopic:  Dark Reaction : Calvin Cycle |
Level 4: Below 35%
NEET - 2022
Hints

The ratio of carbon dioxide fixation between C4 plants and C3 plants is : 

 
1. 2:1  2. 2: 3 
3. 1:1  4. 1:2 
Subtopic:  Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) |
 57%
Level 3: 35%-60%
NEET - 2022
Hints
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The products of light reaction in photosynthesis are: 

1. ATP, NADPH and \(\text{O}_2\)
2. ATP, NADPH, \(\text{O}_2\) and \(\text{H}_2 \text{O}\)
3. ATP, NADPH and \(\text{H}_2 \text{O}\)
4. ATP, NADPH and \(\text{CO}_2\)
Subtopic:  Light Reaction: Electron Transport | Light Reactions |
 79%
Level 2: 60%+
NEET - 2022
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