Question

All proteins are enzymes.
a.) True
b.) False

Answer 1

Proteins are long chain polymers of amino acids. The body of a living organism mostly consists of proteins. It serves a variety of purposes in a living being: for example, they act as messengers between different cells, tissues and organs. Protein also helps in growth of a living being.
Enzymes are biological catalysts that speed up biochemical reactions inside a living organism. Enzymes have an active site where the reacting molecule binds to, which helps in speeding up the reaction.

Complete step by step answer:
Enzymes are biological catalysts that speed up a reaction by providing an alternate pathway for the reaction to happen. They are protein molecules and can be found in many varieties, each functioning as catalysts for different reactions. For example, diastase converts starch to maltose and is found in grains like wheat, barley and malt, and pepsin converts proteins to peptones and is secreted in the stomach.
All enzymes are proteins, but the reverse is not true.
So, the correct answer is “Option B”.

Note: Enzymes are not the only biological catalysts that’s found in our body. Ribozymes are RNA molecules that have the ability to catalyse a chemical reaction. These are nucleic acids and not proteins and were found in 1980’s by Altman and Cech, for which they were awarded the Nobel Prize in Chemistry in 1989.