Where does C3 cycle take place ? Describe main events of CO2 fixation. What are the first and last stable products of CO2 fixation during photosynthesis ?
Dear Student,
The reactions of the C3 or Calvin cycle take place in the stroma that is the inner space of chloroplasts.
There are three stages of C3 cycle: carbon fixation, reduction and regeneration.
Carbon fixation:
Regards
The reactions of the C3 or Calvin cycle take place in the stroma that is the inner space of chloroplasts.
There are three stages of C3 cycle: carbon fixation, reduction and regeneration.
Carbon fixation:
-
Ribulose 1, 5-bisphosphate combines with CO2 to form a six-carbon compound that broken down into two molecules of a three-carbon compound, i.e., 3-phosphoglyceric acid (3-PGA). It is a stable organic intermediate.
- The reaction is catalysed by the enzyme RuBisCO (RuBP Carboxylase-Oxygenase).
Regards