Question

select all that apply
select all the components needed for the production of nadph in photosynthesis.

☐ atp
☐ nadp+
☐ carbon dioxide
☐ electrons
☐ h+

Explanation:

To produce NADPH in photosynthesis (light - dependent reactions), we need to consider the reaction: \(NADP^+ + H^+ + 2e^-
ightarrow NADPH\).

• ATP is produced during the light - dependent reactions and is not a direct reactant for NADPH production, so ATP is not needed for NADPH production.
• \(NADP^+\) is the electron acceptor and is required as it gets reduced to form NADPH.
• Carbon dioxide is used in the Calvin cycle (light - independent reactions) for glucose synthesis, not for NADPH production.
• Electrons (from the splitting of water, \(2H_2O

ightarrow4H^+ + O_2+4e^-\)) are needed to reduce \(NADP^+\).

• \(H^+\) (from water splitting and the proton gradient) is also required for the reduction of \(NADP^+\) to form NADPH.

Answer:

B. \(NADP^+\), D. electrons, E. \(H^+\)