Question

hb unit 2.1 cell energy and photosynthesis quiz 2025 (connected module8)
atp and nadph are produced during photosynthesis. are these reactions classified as anabolic or catabolic? explain your reasons clearly — consider how atp and nadph are made, and include the definitions of anabolic and catabolic reactions in your explanation

Explanation:

Anabolic reactions build complex molecules from simpler ones and require energy input. Catabolic reactions break down complex molecules into simpler ones and release energy. During photosynthesis, ATP (adenosine - triphosphate) is produced through the light - dependent reactions where energy from sunlight is used to add a phosphate group to ADP (adenosine - diphosphate). NADPH (nicotinamide adenine dinucleotide phosphate hydrogen) is also produced in the light - dependent reactions, involving the transfer of electrons and hydrogen ions. These processes involve the synthesis of complex molecules (ATP and NADPH) from simpler precursors using energy from sunlight, which is characteristic of anabolic reactions.

Answer:

The reactions that produce ATP and NADPH during photosynthesis are anabolic. This is because they involve the synthesis of complex molecules from simpler ones using energy from sunlight, which is the definition of anabolic reactions.