Question

Products of the light reactions of photosynthesis that are required by the dark reactions (Calvin Cycle) are:

1) oxygen and ATP
2) water and oxygen
3) ATP and NADPH
4) oxygen and NADPH

Answer 1

The products of the light-dependent reactions of photosynthesis that are necessary for the Calvin cycle are ATP and NADPH. Oxygen is also produced but is not used in the Calvin cycle; it is released as a byproduct.

Step-by-step explanation:

In photosynthesis, there are two stages: the light-dependent reactions and the Calvin cycle, also known as the light-independent reactions. The products of the light reactions that are required by the dark reactions (Calvin Cycle) are ATP and NADPH. Oxygen is also produced during the light reactions, but it is a byproduct that is released into the atmosphere rather than used in the Calvin cycle. The Calvin cycle uses ATP for energy and NADPH for reducing power to convert carbon dioxide from the atmosphere into carbohydrates such as glucose.