Question

Enzymes are needed only in small quantities to catalyse reactions because ______

विकल्प

• they act very fast.

• they remain unchanged at the end of the reaction.

• they are made up to proteins.

• they are temperature and pH sensitive.

Answer 1

Enzymes are needed only in small quantities to catalyse reactions because they remain unchanged at the end of the reaction.

Explanation:

Enzymes are biological catalysts. A key characteristic of any catalyst is that it is not consumed or permanently transformed during the chemical process that it facilitates. Because the enzyme molecule is released in its original state following a reaction, it can be reused thousands of times to process fresh substrate molecules. As a result, only a tiny amount of enzyme is required to catalyse a big volume of substrate.