Question

Why are enzymes necessary?

Answer 1

An enzyme is a protein that controls the speed of a chemical reaction.
Without enzymes , reactions would take place too slowly to keep you alive and therefore you will die

Answer 2

Enzymes are necessary because they are essential to the life of the cells.

Step-by-step explanation:

They act catalysts, which is a substance that increase the speed of the chemical reactions needed by the cell to live and reproduce.

The enzymes fasten the metabolic processes by breaking the molecules into smaller ones.

I hope this answer helps you.