In a chloroplast, the highest number of protons are found in A. Intermembrane space B. Antennae complex C. Stroma D. Lumen of thylakoids
Option D During photosynthetic electron transport, protons (H+) accumulate in the thylakoid space. These protons are released into thylakoid space after each split of water molecule during photooxidation and after each electron transport between PQH2 to cytochrome-f. Increase in the number of protons in the thylakoid space results in an increase in a proton gradient.
