Which of the following is responsible for the stability of secondary polypeptide?

(1)peptide bond

(2)Hydrogen bonding

(3)Di-sulphide bond

(4) Ionic bond

How many of the following bonds is present in tertiary structure of protein

Hydrophobic Interaction, Hydrogen bonding, Di-sulphide bond, Ionic bond, peptide bond

(1)5

(2)4

(3)3

(4)2

Which of the following is the strongest bond in protein?

(1)peptide bond

(2)Hydrogen bonding

(3)Di-sulphide bond

(4) Ionic bond

Which of the following proteins exist in their quaternary structure

1. Myoglobin

2. Haemoglobin

3. Globulin

4. Both 1 and 2

How many heme groups are present in Haemoglobin

(1)2

(2)1

(3)4

(4)3

How many heme groups are present in Myoglobin

(1)2

(2)1

(3)4

(4)3

How many polypeptide subunits are present in Haemoglobin

(1)2

(2)1

(3)3

(4)None of these

Which of the following subunits are present in adult Haemoglobin

1. 2α & 2β type subunits

2. 2α & 2µ type subunits

3. 2β & 2µ type subunits

4. 2α & 2α  type subunits

N-SCYE-C^’ is a  hypothetical polypeptide formed by amino acids. Which of the amino acids of the polypeptide is charged?

(1)S

(2)C

(3)Y

(4)E

14 ^‘N-SCYE-C^’ is a  hypothetical polypeptide formed by amino acids. How many water molecules have been released in the formation of that polypetide

(1)4

(2)3

(3)2

(4)1