Question

the diagram is a representation of part of a plant cell. identify the locations where proton concentration builds up during photosynthesis and cellular respiration

Explanation:

In photosynthesis, protons accumulate in the thylakoid space as a result of the light - dependent reactions. In cellular respiration, protons build up in the intermembrane space of mitochondria during the electron - transport chain.

Answer:

During photosynthesis: thylakoid space; During cellular respiration: intermembrane space of mitochondria