Exemplar Problems
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?
Answer:
(a) 3 molecules of ATP (2 ATP used for the conversion of 3-phosphoglyceric acid to 1-3 bisphosphoglyceric acid and 1 ATP used for the regeneration of the RuBP.) and 2 molecules of NADPH (during conversion of 1-3 bisphosphoglyceric acid to 3 phosphoglyceraldehyde) are required for reduction of carbon dioxide.
(b) Calvin cycle occurs in the stroma of the chloroplast.
BETA
