Question

Nomenclature of the enzyme consists of
A. First substrate name and then reaction name
B. First reaction name and then the product name
C. Only product name
D. Only reaction name

Answer 1

Hint:-Enzyme is a substance which acts as a catalyst in the living organisms, where they
regulate the rate at which chemical reaction proceed without itself being altered in the process of the
reaction.

Complete step-by-step solution:-
1. All living organisms have some biological procedures happen in their body as a chemical
reaction, where most of them are regulated by the enzymes.
2. So if there are no enzymes in the body no reaction takes place in the body which may damage
the body’s metabolic process.
3. So enzymes are the substance that catalyzes all aspects of cell metabolism.
4. A very large number of enzymes are found in the body where each enzyme can catalyst the
many reactions, so to avoid the confusion, every enzyme has its name and it is given according
to the International Union of biochemistry and molecular biology with some set of rules.
5. Where the name of the enzyme has two parts, where the first part of the enzyme represents the
name of the substrate while the second part of the enzyme name represents the type of
reaction, and this nomenclature of the enzyme was determined by the enzyme commission in
the year 1961.
6. So the suffix is a substance that undergoing the reaction, and again each suffix has one
representative for easy identification such as -ase, -in, etc. And the prefix tells about the type of
reaction.
So the correct option is A.

Note:- So, to say simply each name of the enzyme has two parts, suffix represent the name of substance and prefix about the type of reaction, for example enzyme pyruvate dehydrogenase, where the pyruvate is the substrate of that reaction, and dehydrogenase represent type of reaction which means oxidoreductase reaction by using electron acceptor.