Final answer:
The Calvin Cycle is associated with the light independent reactions of photosynthesis and uses ATP and NADPH from light-dependent reactions to form glucose from CO₂.
Step-by-step explanation:
The Calvin Cycle is most closely associated with the light independent reactions of photosynthesis. During photosynthesis, light-dependent reactions take place in the thylakoid membranes and produce ATP and NADPH. The energy and reducing power from ATP and NADPH are then harnessed in the Calvin Cycle, which occurs in the stroma, to convert atmospheric carbon dioxide into carbohydrates like glucose. This cycle helps to fix carbon through a series of reactions facilitated by enzymes such as ribulose biphosphate carboxylase (RuBisCO). It results in the synthesis of Glyceraldehyde-3-phosphate (GA3P), which can be then used to form glucose and other carbohydrates. Unlike the Calvin Cycle, the Krebs cycle is part of cellular respiration, which takes place in the mitochondria of cells and produces ATP, NADH, and other molecules useful in the energy transfer processes of a cell.