AP BIOLOGY

Detailed explanation-1: -Summary. Photosynthesis makes use of large multi-protein complexes called photosystems (PS) to capture solar energy and convert it to chemical energy. PS II specifically uses light energy from the sun to extract electrons from water, resulting in the oxidation or “splitting” of water to form oxygen and hydrogen.

Detailed explanation-2: -Photosystem I receives electrons from plastocyanin or cytochrome c6 on the lumenal side of the thylakoid membrane and uses light energy to transfer them across the membrane to ferredoxin on the stromal side. It can also function in a cyclic electron transport pathway.

Detailed explanation-3: -The correct option is A Inner surface of thylakoid membrane. Splittingof water: Splitting of water is the reaction that occurs inside the thylakoidmembrane.

Detailed explanation-4: -Photosynthesis: A light reaction that sets plants apart The very first step of this reaction starts with a light photon striking the Photosystem II (PSII) to initiate photosynthesis. This absorption of light energy helps split water molecules into hydrogen and oxygen, generating free electrons.

Detailed explanation-5: -Photolysis is a process in which light energy and catalysts combine to divide water molecules into protons (H+), electrons, and oxygen gas. The electrons go to chlorophyll, the protons contribute to a proton gradient that powers ATP production, and oxygen is a byproduct.