3CO2 + 9ATP + 6NADPH + Water glyceraldehyde 3 – phosphate + 9 ADP + 6 NADP+ + 8 Pi

Question:

3CO2 + 9ATP + 6NADPH + Water glyceraldehyde 3 – phosphate + 9 ADP + 6 NADP+ + 8 Pi

Analyse the above reaction and answer the following questions:

a. How many molecules of ATP & NADPH are required to fix one molecule of CO2?

b. Where in the chloroplast does this process occur?

Solution:

(a) 3 molecules of ATP are required for phosphorylation and 2 molecules of NADPH are required for reduction of carbon dioxide.

(b) This reaction occurs in the stroma of the chloroplast.

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