Question

Which of the following statements best describes the relationship between the light-dependent and light-independent reactions of photosynthesis?

1) The light-independent reactions release energy, and the light-dependent reactions require energy.2)The light-dependent reactions produce ATP and NADPH, which are then used by the light-independent reactions.3)The light-dependent reactions produce carbon dioxide, which is then used by the light-independent reactions.4)The light-dependent reactions pass electrons through an electron transport chain to the light-independent reactions.

Answer 1

The answer is A) NADP+, ADP

Step-by-step explanation:

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Answer 2

The correct answer is: 2)The light-dependent reactions produce ATP and NADPH, which are then used by the light-independent reactions

The light-dependent reactions is one of the two successive phases that occur during photosynthesis (other is light-independent reactions). The light-dependent reactions use sunlight energy to make the energy storage molecule ATP and the reduced electron carrier NADPH. In the light-independent reactions (also called Calvin cycle), CO2 is absorbed and fixed in order to build three-carbon sugars (glyceraldehyde-3-phosphate) and this process is fueled by, ATP and NADPH from the light reactions.