Question

Why are enzymes so important?

Answer 1

i got you my dude

Because they act as a catalyst in the chemical reactions necessary for life within organisms. 
This is because without these enzymes that are speeding up the chemical reactions, we would not be able to live since they would take too long.

Answer 2

Answer: Enzymes are so important because they act as a catalyst in the chemical reactions necessary for life within organisms.

Catalysts of biochemical reactions are enzymes and are responsible for bringing about almost all of the chemical reactions in living organisms.the reaction starts at a particular temperature and pH and so there is a need of catalyst to enhance the rate of reaction and lower down the energy required for the reaction i.e lowering the threshold  energy .