Question

The light reactions of photosynthesis use chemiosmosis to produce ATP that will be used in the Calvin cycle. The electrochemical gradient that drives this chemiosmosis is formed across which structure(s)?

Answer 1

Answer: Thylakoid membrane.

Explanation:

Photosynthesis is a chemical process carried out by plants, algae, and certain microorganisms, whereby solar energy is captured and converted into chemical energy in the form of ATP and organic compounds. During electron transfer, the protons (H +) of the H atoms are sent to the interior of the thylakoids through their membranes, producing an energy gradient. This electrochemical gradient generates enough energy to phosphorylate ADP and produce ATP, similar to the oxidative phosphorylation that occurs in mitochondria. The end products are ATP and NADPH.