Answer:
C. captures the potential energy of the proton gradient in the intermembrane space as the chemical energy in phosphate bonds of ATP.
Explanation:
ATP Synthase uses the energy of an existing proton gradient to power the production of ATP. This process is known as CHEMIOSMOSIS.
Answer: 26.75 meters.
2πr = 84
2 * 3.14 * radius = 84
radius = 84/6.28
r= 13.375
So the diameter will be 13.375 + 13.375 which is 26.75 meters.