Cell Structure & Organelles MCQs with Answers

The following is an example of a globular protein?

• A.Keratin
• B.Collagen
• C.Hemoglobin
• D.Fibroin

The resting phase between any two mitotic divisions is called ?

• A.Anaphase
• B.Prophase
• C.Telophase
• D.Interphase

Animal and Plant bodies contain of water.

• A.30%
• B.50%
• C.90%
• D.70%

Entire organism consists of a single cell is _?

• A.Chlorella
• B.Amoeba
• C.Paramecium
• D.Euglena

NAD (Nicotinamide Adenine Dinucleotide) is an example of ?

• A.Mononucleotide
• B.Dinucleotide
• C.Trinucleotide
• D.Polynucleotide

Which structure is specifically found in tertiary structure of proteins?

• A.Peptide bond
• B.Hydrogen bond
• C.Disulphide (S-S) linkage
• D.Glycosidic bond

How many molecules of carbon dioxide will be produced from the breakdown of two molecules of glucose in aerobic respiration?

• A.6
• B.18
• C.12
• D.24

In the course of glycolysis ?

• A.Glucose is degraded into two molecules
• B.Glucose is synthesized from two pyruvate molecules
• C.Glucose is converted into a single larger molecule
• D.Glucose is directly oxidized to carbon dioxide and water

Which one forms weak linkage with enzyme?

• A.Coenzyme
• B.Prosthetic group
• C.Cofactor
• D.Both A and C

Which statement about enzymes is essential to the lock and key hypothesis?

• A.Enzymes are protein molecules
• B.Enzyme molecules each have a distinct shape
• C.Enzymes speed up chemical reactions
• D.Enzymes are destroyed after the reaction