Some metabolic reactions require that one molecule undergoes a reaction that causes it to lose energy and that energy is then transfered to a new chemical bond on another molecule. This describes.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

its b. greenhouse gasses trap uv rays for heat so that the plants stay alive.