Question

how do atp and nadph connect light - dependent and light - independent reactions in photosynthesis?
atp and nadph are produced in both reactions.
atp and nadph are used in both reactions.
atp and nadph are produced in the light - dependent reactions and used in the light - independent reactions.
atp and nadph are produced in the light - independent reactions and used in the light - dependent reactions.

Explanation:

• In light - dependent reactions of photosynthesis, light energy is used to produce ATP (through photophosphorylation) and NADPH (through the reduction of \(NADP^+\)).
• The light - independent reactions (Calvin cycle) require energy and reducing power. ATP provides the energy, and NADPH provides the reducing power (in the form of hydrogen atoms) for the conversion of \(CO_2\) into glucose.

Answer:

ATP and NADPH are produced in the light - dependent reactions and used in the light - independent reactions.