Complete the following chart: Sr. No. Proteins Physiological role (1) Collagen ......................... (2) .................. Responsible for muscle contraction (3) Immunoglobulin IgG ......................... (4) ............... Significant in respiration (5) Fibrinogen ................

Sr. No. Proteins Physiological role (1) Collagen Provide tensile strength (2) Myosin & actin Responsible for muscle contraction (3) Immunoglobulin IgG Protect body against infection (4) Haemoglobin Significant in respiration (5) Fibrinogen Helps in blood clotting Collagen is the most abundant protein in the body that provides tensile strength to the connective tissues. Actin and Myosin are the muscle proteins that participate in the process of muscle contraction. Immunoglobulin IgG is an antibody that protects the body against infections. Haemoglobin is a conjugate protein that helps in carrying oxygen molecule during respiration. Fibrinogen participates in the coagulation of blood.

Answer the question with reference to the following figure. Name the type of bond formed between two polypeptides.

Polypeptides are formed by the polymerisation of amino acids. Two adjacent polypeptides are joined by disulphide bonds. A disulphide bond is established between the amino acids that contain sulphur in their chemical structure.

Answer the question with reference to the following figure. Which amino acid is involved in the formation of such a bond?

Cysteine is the amino acid that is involved in the formation of the disulphide bond. Cysteine is a non-essential amino acid that contains sulphur which participates in the formation of the disulphide bond.

Answer the question with reference to the following figure: Amongst I, II, III and IV structure level of protein, which level of structure includes such bond?

In the given figure, amongst primary, secondary, tertiary and quaternary structure level of proteins, the tertiary level of protein structure includes the disulphide bond between cysteine amino acids.

E M B I B E

Biology>Chapter 6 - Biomolecules>Exercise>Q 3

HARD

11th Maharashtra Board

IMPORTANT

Earn 100

Explain the secondary structure of protein with example.

Important Questions on Biomolecules

HARD

11th Maharashtra Board

IMPORTANT

Biology>Chapter 6 - Biomolecules>Exercise>Q 3

Explain the induced fit model for the mode of enzyme action.

EASY

11th Maharashtra Board

IMPORTANT

Biology>Chapter 6 - Biomolecules>Exercise>Q 3

What is RNA? Enlist the types of RNA.

EASY

11th Maharashtra Board

IMPORTANT

Biology>Chapter 6 - Biomolecules>Exercise>Q 3

Describe the concept of the metabolic pool.

MEDIUM

11th Maharashtra Board

IMPORTANT

Biology>Chapter 6 - Biomolecules>Exercise>Q 3

How are secondary metabolites useful for mankind?

HARD

11th Maharashtra Board

IMPORTANT

Biology>Chapter 6 - Biomolecules>Exercise>Q 4

Complete the following chart:

Sr. No.	Proteins	Physiological role
(1)	Collagen	.........................
(2)	..................	Responsible for muscle contraction
(3)	Immunoglobulin IgG	.........................
(4)	...............	Significant in respiration
(5)	Fibrinogen	................

MEDIUM

11th Maharashtra Board

IMPORTANT

Biology>Chapter 6 - Biomolecules>Exercise>Q 4

Answer the question with reference to the following figure.

Question Image

Name the type of bond formed between two polypeptides.

EASY

11th Maharashtra Board

IMPORTANT

Biology>Chapter 6 - Biomolecules>Exercise>Q 4

Answer the question with reference to the following figure.

Question Image

Which amino acid is involved in the formation of such a bond?

MEDIUM

11th Maharashtra Board

IMPORTANT

Biology>Chapter 6 - Biomolecules>Exercise>Q 4

Answer the question with reference to the following figure:
Question Image
Amongst I, II, III and IV structure level of protein, which level of structure includes such bond?

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