Question 20
$3−phosphate+9ADP+6NADP++8Pi.3CO_2+9ATP+6NADPH+water \longrightarrow Glyceraldehyde~3-phosphate+9ADP+6NADP^++8Pi.$
Analyze the above reaction and answer the following questions.
How many molecules of ATP and NADPH are required to fix one molecule of $CO_2?$

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Solution

3 molecules of (adenosine triphosphate) ATP are required for phosphorylation and 2 molecules of NADPH (nicotinamide adenine dinucleotide phosphate hydrogen) are required for the reduction of carbon dioxide.

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Question 21
$3 C O_{2} + 9 A T P + 6 N A D P H + w a t e r ⟶ G l y c e r a l d e h y d e 3 - p h o s p h a t e + 9 A D P + 6 N A D P^{+} + 8 P i .$
Analyse the above reaction and answer the following questions.
(b) Where in the chloroplast does this process occur?

Q. Assertion :Each molecule of NADPH and two ATP are required for the fixation of one molecule of

C O_{2}

Reason: Three molecule of NADPH and two ATP are required the for fixation of one molecule of

C O_{2}

How many ATP and NADPH molecules are respectively required to make one molecule of glucose through the Calvin cycle?

Q. How many ATP and NADPH molecules will be required to make one molecule of glucose through the Calvin pathway?

Q. How many molecules of ATP and NADPH are required in formation of two molecules of glucose? How many Calvin cycles are required?

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