AP BIOLOGY

Detailed explanation-1: -The correct answer is Photolysis.

Detailed explanation-2: -Given its presence in water, it’s an extremely common element on Earth. A single photon of visible light carries sufficient energy to cleave water’s hydrogen molecule ( H2) from its oxygen counterpart.

Detailed explanation-3: -You will find out that water is made up of hydrogen and oxygen atoms, and that we can split the atoms in a water molecule apart using electricity. This process of using electricity to drive a chemical reaction, like splitting water molecules apart, is known as “electrolysis."

Detailed explanation-4: -A photon of light energy travels until it reaches a molecule of chlorophyll. The photon causes an electron in the chlorophyll to become “excited.” The energy given to the electron allows it to break free from an atom of the chlorophyll molecule.

Detailed explanation-5: -Four photons are absorbed by photosystem II to split the water molecules, form molecular oxygen, and release four electrons.