The reactions of this stage also require specific enzymes to catalyse them. Light energy absorbed by chlorophyll is converted into chemical energy. Some of this energy is used to split water into ...

Photosynthesis involves several different chemical reactions, but these can be summarised in two main stages. In the first reaction, energy is used to split water molecules into hydrogen and oxygen.

All living things depend on millions of chemical reactions that happen constantly. Chemical reactions that keep you alive happen fast! When you eat food, breathe, play, and grow, all of these are ...