Answer:
In the light-independent reactions, the plant starts with carbon dioxide and ends up with glyceraldehyde-3-phosphate (G3P). It uses ATP and NADPH from the light-dependent reactions as energy sources
Explanation:
Step 1: CO₂ adds to ribulose biphosphate (RBP) to form a six-carbon sugar that immediately decomposes into two molecules of 3-phosphopglycerate (3-PGA).
CO₂ + RBP ⟶ 2 3-PGA
Step 2. A phosphate group adds to the 3-PGA to form 1,3-biphosphoglycerate (1,3-BPG).
3-PGA + ATP ⟶ 1,3-BPG + ADP
Step 3. NADPH reduces the 1,3-BPG to G3P
1,3-BPG + NADPH ⟶ G3P + NADP⁺
Most of the G3P is regenerated into RBP, but some leaves the cycle to become glucose.
