The ATP synthase consists of two parts where:

1. F0 is a transmembrane channel and F1 protrudes out towards stroma
2. F1 is a transmembrane channel and F0 protrudes out towards stroma
3. F0 is a transmembrane channel and F1 protrudes out towards lumen of thylakoid
4. F1 is a transmembrane channel and F0 protrudes out towards lumen of thylakoid

Subtopic:  Chemiosmotic hypothesis |
 78%
From NCERT
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NCERT textbook mentions that “immediately after light becomes unavailable, the biosynthetic process continues for some time and then stops”. Why does it stop after some time?

1. The respiration stops in the absence of light and hence synthesis of sugars stops
2. The reactions of the biosynthetic phase are directly dependent on light
3. The reactions of the biosynthetic phase are dependent on the products of light reaction
4. This is a mistake in NCERT as Dark Reactions will continue throughout night
Subtopic:  Chloroplast Structure | Dark Reaction: Biosynthetic Phase |
 89%
From NCERT
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How many carbon atoms does the primary carbon dioxide acceptor have in C3  photosynthesis?

1. 2 2. 3
3. 4 4. 5
Subtopic:  Dark Reaction : Calvin Cycle |
 76%
From NCERT
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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 |
 87%
From NCERT
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Identify the incorrect statement regarding the comparison of C4 plants to the C3 plants:
1. They tolerate higher temperatures
2. They show a response to high light intensities
3. They have a lower productivity of biomass
4. They lack photorespiration

Subtopic:  C4 Cycle (Hatch & Slack Pathway) |
 81%
From NCERT
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The bundle sheath cells are characterized by:

I: a large number of chloroplasts present in them
II: thick cell walls impervious to gas exchange
III: large intercellular spaces

1. Only I and II 2. Only I and III
3. Only II and III 4. I, II and III
Subtopic:  Question on C4 Pathway |
 72%
From NCERT
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The primary CO2 acceptor in C4 plants is:
1. RuBP in mesophyll cells
2. RuBP in bundle sheath cells
3. PEP in mesophyll cells
4. PEP in bundle sheath cells

Subtopic:  C4 Cycle (Hatch & Slack Pathway) |
 83%
From NCERT
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The C3 pathway:
1. is common to all plants
2. takes place in mesophyll cells in C4 plants
3. takes place in bundle sheath cells in C3 plants
4. does not take place in CAM plants

Subtopic:  Dark Reaction : Calvin Cycle |
 86%
From NCERT
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In C4 pathway, the 4-carbon compound transported to bundle sheath cells most commonly is:

1. Glutamic acid 2. Malic acid
3. Oxaloacetic acid 4. Fumaric acid
Subtopic:  C4 Cycle (Hatch & Slack Pathway) |
 72%
From NCERT
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The most common enzyme in the world is:

1. PEP carboxylase 2. Pyruvate dehydrogenase
3. RuBisCO 4. Collagenase
Subtopic:  Dark Reaction : Calvin Cycle |
 95%
From NCERT
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