Dark reaction depends upon-

1. Presence of darkness
2. Presence of light
3. Products of light reactions
4. Products of biosynthetic phase

Subtopic:  Dark Reaction : Calvin Cycle |
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Level 1: 80%+
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The first dark reaction or CO2 fixation product is-

1. 3C – Organic Acid 2. 6C – Organic Acid
3. 5C – Organic Acid 4. 1C – Organic Acid
Subtopic:  Dark Reaction : Calvin Cycle |
 82%
Level 1: 80%+
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Melvin-Calvin used ------- radioactive in-----studies for the discovery of first CO2 fixation product.

1. 14C , Fungal photosynthesis
2. 14C , Algal photosynthesis
3. 15N , Fungal photosynthesis
4. 15N , Algal photosynthesis
Subtopic:  Dark Reaction : Calvin Cycle |
 93%
Level 1: 80%+
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The first product of C3 and C4 cycle are:

1. PGA, PGAL 2. PGA, OAA
3. PGAL, RuBP 4. PGAL, OAA
Subtopic:  CAM Pathway |
 92%
Level 1: 80%+
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What is the primary acceptor of CO2 in dark reaction?

1. Ketose sugar 2. Aldose sugar
3. Fatty acid 4. Sucrose
Subtopic:  Dark Reaction : Calvin Cycle |
 79%
Level 2: 60%+
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Which of the following is not a step of photosynthesis?
a. Decarboxylation
b. Carboxylation
c. Regeneration
d. Reduction

Subtopic:  Dark Reaction : Calvin Cycle |
 82%
Level 1: 80%+
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Calvin Pathway occurs-
a. Only C3
b. Only C4
c. All photosynthetic plants
d. only in C2 plants

Subtopic:  Dark Reaction : Calvin Cycle |
 88%
Level 1: 80%+
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The most crucial step of Calvin cycle-
a. Decarboxylation
b. Carboxylation
c. Regeneration
d. Reduction

Subtopic:  Dark Reaction : Calvin Cycle |
 71%
Level 2: 60%+
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How many molecules of ATP and NADPH are utilized in the step of reduction?
a. 2,2
b. 2,3
c. 2,4
d. 2,5

Subtopic:  Dark Reaction : Calvin Cycle |
 79%
Level 2: 60%+
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For the formation of one molecule of Glucose, how many turns of fixation are required?

1. 3 2. 2
3. 6 4. 4
Subtopic:  Dark Reaction : Calvin Cycle |
 93%
Level 1: 80%+
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