Which of the following events occurs first during chemiosmosis?
A) integral proteins translocate H+ ions across the membrane, creating a pH gradient.
B) ATP synthase molecules facilitate the movement of H+ ions across the membrane.
C) ATP synthase phosphorylates ADP.
D) the electrons are taken up by oxygen to make water.
Answer: A) integral proteins translocate H+ ions across the membrane, creating a pH gradient.