Photosynthesis In Higher Plants Question 159
Question: Which of the following is present in Calvin cycle [CBSE PMT 1996]
Options:
A) Photophosphorylation
B) Oxidative carboxylation
C) Reductive carboxylation
D) Oxidative phosphorylation
Show Answer
Answer:
Correct Answer: C
Solution:
Reductive carboxylation starts with a 5-carbon sugar ribulose-5-phosphate.
6 mol of this sugar react with 6 mol of ATP (produced in light reaction) to form 6 mol of RuBP and 6 mol of ADP Ribulose 5-phosphate $ \xrightarrow{Phosphopentokinase} $ Ribulose 1,5-bisphosphate + 6ADP