During photosynthesis, the thylakoid space is more acidic than the intermembrane space of the chloroplast. Why?
a. The cytochrome b - f complex pumps protons into the thylakoid space.
b. The H+concentration decreases due to ATP synthase activity.
c. Ferredoxin converts NADP -to NADPH.
d. The H+concentration increases due to ATP synthase activity.
e. The cytochrome b - f complex pumps electrons into the lumen of the thylakoid space.
