Question

A __________is a biocatalyst that increases the rate of the reaction without being changed.
a) Aluminum oxide
b) Silicon dioxide
c) Enzyme
d) Hydrogen peroxide​

Answer 1

Answer:

A substance that starts or speeds up a chemical reaction while undergoing no permanent change itself. It increases the rate of reaction without being consumed itself e.g. enzymes in saliva are catalyst in digestion.

Answer 2

An enzyme is a biocatalyst that increases the rate of the reaction without being changed.

What are enzymes?

An organic catalyst, usually protein in nature, produced within the living cell that accelerates a specific biochemical reaction by lowering the activation energy required for that reaction is known as enzyme.

Enzymes consist of two parts -

(i) One part is protein in nature and is called as apoenzyme.

(ii) The other part is non-protein which is known as cofactor.

Apoenzyme and cofactor together known as Holoenzyme.