Question

Which of the following is an important difference between light-dependent and light-independent reactions in photosynthesis? a. The light-dependent reactions use CO2 and water, and the light-independent reactions produce CO2 and water. b. The light-dependent reactions occur in the cytoplasm, and the light-independent reactions occur in the chloroplast. c. The light-dependent reactions do not require light, and the light-independent reactions require light. d. The light-dependent reactions produce ATP and NADPH, and the light-independent reactions use the energy stored in ATP and NADPH.

Answer 1

Light-dependent reactions convert sunlight into ATP and NADPH, used by light-independent reactions to synthesize glucose from CO2.

So, the correct answer is D.

Step-by-step explanation:

The important difference between light-dependent and light-independent reactions in photosynthesis is that light-dependent reactions produce ATP and NADPH, while light-independent reactions use the energy stored in ATP and NADPH. Specifically, the light-dependent reactions transform sunlight into chemical energy in the form of ATP and NADPH, which take place in the thylakoid membranes of the chloroplasts. On the other hand, light-independent reactions, also known as the Calvin cycle, occur in the stroma and utilize this chemical energy to synthesize glucose from CO2.

So, the correct answer is D.