Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis?
It involves : 
1. Reduction of NADP to NADPH2 on the stroma side of the membrane 
2. Breakdown of proton gradient 
3. Breakdown of electron gradient 
4. Movement of protons across the membrane to the stroma 

Subtopic:  Chemiosmotic hypothesis |
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Given below are two statements: 
Statement I : The primary \(CO_2\) acceptor in \(C_4\) plants is phosphoenolpyruvate and is found in the mesophyll cells 
Statement II : Mesophyll cells in \(C_4\) plants lack RuBisCo enzyme.
In the light of the above statements, choose the correct answer from the options given below : 
1. Statement I is incorrect but statement II is correct 
2. Both statement I and Statement II are correct 
3. Both statement I and Statement II  are incorrect 
4. Statement I is correct but statement II is incorrect
Subtopic:  C4 Cycle (Hatch & Slack Pathway) |
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"Girdling Experiment" was performed by Plant Physiologists to identify the plant tissue through which:
1. osmosis is observed
2. water is transported
3. food is transported
4. for both water and food transportation
Subtopic:  Historical View: Experiments |
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What is the role of large bundle sheath cells found around the vascular bundles in C4 plants ?
1. To protect the vascular tissue from high light intensity
2. To provide the site for photorespiratory pathway
3. To increase the number of chloroplast for the operation of Calvin cycle
4. To enable the plant to tolerate high temperature

Subtopic:  Question on C4 Pathway |
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The products of light reaction in photosynthesis are: 
1. ATP, NADPH and \(O_2\)
2. ATP, NADPH, \(O_2\) and \(H_2O\)
3.  ATP, NADPH , and \(H_2O\)
4.  ATP, NADPH ,  and \(CO_2\)

Subtopic:  Light Reaction: Electron Transport | Light Reactions |
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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 |
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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 |
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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) Primary acceptor of electron 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 |
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Which of the following statements is incorrect?

1. Grana lamellae have both PSI and PS II.

2. Cyclic photophosphorylation involves both PS I and PS II.

3. Both ATP and NADPH+H+ are non-cyclic synthesized during photophosphorylation.

4. Stroma lamellae have PS I only and lack NADP reductase.

Subtopic:  Light Reaction: Photophosphorylation |
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The first stable product of CO2 fixation in sorghum is:

(1) Succinic acid

(2) Phosphoglyceric acid

(3) Pyruvic acid

(4) Oxaloacetic acid

Subtopic:  C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
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