Question

how do chlorophyll pigments absorb energy from light? a photon causes chlorophyll to absorb a proton from a water molecule. a photon causes a water molecule to release a h+ ion, which is absorbed by chlorophyll. a photon excites h+ ions in the lumen, which bind to chlorophyll and increase its potential energy. a photon excites chlorophyll, causing it to gain multiple electrons from electron donors in the lumen. a photon excites an electron in the chlorophyll to a higher energy state.

Explanation:

Chlorophyll absorbs light energy when a photon excites an electron within the chlorophyll molecule to a higher - energy state. This is the fundamental process of light - energy absorption in photosynthesis. The other options do not accurately describe the light - absorption mechanism of chlorophyll. For example, chlorophyll does not absorb protons from water molecules, nor does it primarily interact with released H+ ions in the ways described in the other incorrect options.

Answer:

A photon excites an electron in the chlorophyll to a higher energy state.