Answer:
...enzymes increase the speed of the reaction
Explanation:
In biological systems, enzymes are proteins that mediate chemical reactions. They increase the rate of chemical reactions, by lowering the activation energy, required for the reaction (eg. hydrolysing a bond) to occur.
Enzymes require the aid of cofactors, inorganic molecules to act as complements to enzymes. They cause structural changes that result in substrate recognition and binding. Here they act by breaking down large fat molecules into fatty acids and lipids.