Photosynthesis overview Animation

Illustration of the interrelationships of the light-dependent and light-independent reactions of photosynthesis. The light-dependent reactions split water, and produce ATP and NADPH. Oxygen is a by-product of these reactions. ATP and NADPH, together with carbon dioxide, are reactants in the light-independent reactions. The products are sugars, NADP, ADP, and inorganic phosphate. The light-dependent and light-independent reactions thus form a cycle in which the net inputs are water and carbon dioxide, and the net outputs are oxygen and carbohydrates.

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