AP BIOLOGY

Detailed explanation-1: -In this process of photolysis (“splitting by light”), H2O molecules are broken into hydrogen ions, electrons, and oxygen atoms. The electrons replace those originally lost from chlorophyll.

Detailed explanation-2: -Thus, the end products of the photolysis reaction are oxygen, NADPH and ATP.

Detailed explanation-3: -Sunlight catalyzes the splitting of water into separate hydrogen and oxygen atoms, in a process called photolysis. The oxygen is released as a waste product while the hydrogens build up to form a high concentration. These hydrogens run a series of reactions ending in two molecules: NADPH and ATP.

Detailed explanation-4: -This happens through the photolysis of water-light energy causes a water molecule to split apart and release hydrogen ions, electrons and oxygen.

Detailed explanation-5: -During this process, the electrons in water are removed and passed to the reaction centre chlorophyll. The associated hydrogen ions are released from the water molecule, and after two water molecules are thus split, the oxygen atoms join to form molecular oxygen (O 2 ), a waste product of photosynthesis.