Enzymes MCQs with Answers

Enzymes MCQs

Hello students, our today’s topic is ‘Enzymes’. Lots of reactions occur in the human body and it’s very interesting that someone controls these reactions. In 1833, a French chemist Anselme payen was the very first to discover and named ‘Enzyme’. Enzymes are substances or proteins or RNA.

The following MCQs will help you to know more about ‘Enzymes’.

MCQ.1): …………………………………………………………………. do speed up the rate of the biochemical reaction and are biological catalysts.

a) Enzymes

b) Deoxyribonucleic acid

c) Mitochondria

d) None of them

MCQ.2): In some cases RNA also acts as enzymes and it is called as …………………………………………………………….

a) A DNA

b) Ribozymes

c) Rhizom

d) tRNA

MCQ. 3): The ………………………………………………………………. Is the region where substrate, cofactors and prosthetic groups binds and contains residue that helps to hold the substrate.

a) Active site

b) Specific site

c) Amino acid residue

d) All of them

MCQ.4): How many types of active sites are there in enzymes?

a) One

b) Two

c) Three

d) Four

MCQ.5): Which is the non-protein molecule that carries out chemical reactions and unable to perform by 20 amino acids?

a) Enzymes

b) Proteins

c) Co-factors

d) RNA

MCQ.6): Which of the following is a tightly arranged organic cofactor?

a) Coenzymes

b) Prosthetic group

c) Inorganic factor

d) NAD+

MCQ.7): Which is a designated as an enzyme with its cofactor removed?

a) Apoenzyme

b) Riboenzyme

c) Holoenxyme

d) Akoenzyme

MCQ.8): In the cell, intracellular enzymes are synthesized and utilized in the cell for use of …………………………………………………………………….

a) Brain

b) Cell itself

c) Hepatic cell

d) Liver

MCQ.9): In the extracellular enzyme, digestive enzymes were produced by the pancreas but are not used by the ………………………………………………………….

a) Cell of liver

b) Cells of pancreas

c) Cells of duodenum

d) Cells of stomach

MCQ.10): Enzymes are sensitive to change ………………………………………………………………….

a) pH

b) Temperature

c) Substrate concentration

d) All of them

MCQ.11): A classification of enzymes which is systematic has been developed by …………………………………………………………………….

a) Internal Enzyme Center

b) International Enzyme Commission

c) Inter Enzyme Coordinator

d) International Enzyme Company

 

Answer

1) a) Enzymes

2) b) Ribozymes

3) a) Active site

4) b) Two

5) c) Co-factors

6) b) Prosthetic group

7) a) Apoenzyme

8) b) Cell itself

9) b) Cells of pancreas

10) d) All of them

11) b) International Enzyme Commission


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