The CALVIN CYCLE: a) Location in chloroplast: b) Input: c) Immediate output/product(s): d) Purpose: e) Connection to other steps/processes: f) Other:
The CALVIN CYCLE:
- a) Location in chloroplast:
- b) Input:
- c) Immediate output/product(s):
- d) Purpose:
- e) Connection to other steps/processes:
- f) Other:
Malvin Calvin Benson and their colleagues used radioactive Chlorella, Algae to discover that the first CO2 fixation product is a 3- Carbon compound called as 3- phosphoglycerate(3-PGA). Calvin cycle has three stages:-
1)Carboxylation- In this process, CO2 fixes into 3-phosphoglycerate through RuBP with the help of enzyme RubisCo.
2) Reduction- It is a series of reactions that lead to the formation of glucose. To reduce 1 molecule of CO2, 2 molecules of ATP and NADPH are required. Six turns of this cycle remove 1 molecule of glucose.
3) Regeneration- Regeneration of RuBP is required if a cycle is to be continued without any interruption. It requires 1 molecule of ATP for phosphorylation to form RuBP again. The plants that follow this pathway are:- Wheat, potatoes, etc.
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