Q.

The net requirement of assimilatory powers for the formation of 1 hexose molecules in C3 plant is:

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By Expert Faculty of Sri Chaitanya

a

72 ATP and 48 NADPH+H+

b

90 ATP and 60 NADPH+H+

c

108 ATP and 72 NADPH+H+

d

18 ATP and 12 NADPH+H+

answer is 4.

(Detailed Solution Below)

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Detailed Solution

Six turns of Calvin cycle are required to produce one molecule of glucose. Twelve ATP and twelve NADPH+H+ molecules are required during reduction phase where twelve 3-PGA molecules are reduced to twelve PGAL molecules and 6 ATPs are required during regeneration phase where six RuBP molecules are regenerated from ten molecules of PGAL.
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