Light Dependent reaction

-Chlorophyll absorbs light exciting its electrons within in it causing them to leave in a process known as photoionisation

-in order to gain back the lost electrons the chlorophyll splits water up into 2H+ + 2e- + ½ O2 in a process known as photolysis which uses the light energy used in photoionisation to split the water molecule

-Electrons are carried by electron carrier proteins ,which are embedded in the thylakoid membrane, forming an electron transfer chain

-This creates energy which some is conserved in the production of ATP and reduced NADP

-energy created from the electrons is then able to be used by proton pumps to create a electrochemical gradient of protons inside the thylakoid membrane

-because of the gradient created these protons are then able to diffuse through an ATP synthase enzyme which then catalyses the production of ATP