Question

select all the correct labels on the image. 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:

To determine where proton concentration builds up during photosynthesis and cellular respiration:

• Photosynthesis: In the light - dependent reactions of photosynthesis, protons are pumped into the thylakoid space (inside the thylakoid) from the stroma. This creates a proton gradient across the thylakoid membrane.
• Cellular Respiration: In the mitochondria, during the electron transport chain of cellular respiration, protons are pumped from the mitochondrial matrix into the intermembrane space of the mitochondria, creating a proton gradient across the inner mitochondrial membrane.

So the regions where proton concentration builds up are the thylakoid space (for photosynthesis) and the intermembrane space (for cellular respiration).

Answer:

• Thylakoid space (in the chloroplast, related to photosynthesis)
• Intermembrane space (in the mitochondrion, related to cellular respiration)