Question

Match the pairs of proteins and their types in Column-I and Column-II. Choose the correct option.
Column-I Column-II
(a) Structural (i) Immunoglobulin
(b) Contractile (ii) Myoglobin
(c) Transport (iii) Keratin
(d) Defensive (iv) Myosin

• A. a-(i), b-(ii), c-(iii), d-(iv)
• B. a-(i), b-(iv), c-(ii), d-(iii)
• C. a-(iv), b-(iii), c-(ii), d-(i)
• D. a-(iii), b-(iv), c-(ii), d-(i)

Hint:

Remember: Keratin-structure, Myosin-movement, Myoglobin-transport, Immunoglobulin-defense.

Answer 1

The Correct Option is D

Step 1: Understanding protein functions.
Proteins are classified based on their biological roles such as structure, movement, transport, and defense.
Step 2: Matching Column-I with Column-II.
Structural protein: Keratin provides structural strength to hair and skin, so a-(iii).
Contractile protein: Myosin is involved in muscle contraction, so b-(iv).
Transport protein: Myoglobin helps in oxygen transport and storage, so c-(ii).
Defensive protein: Immunoglobulins function in immune defense, so d-(i).
Step 3: Conclusion.
The correct matching is a-(iii), b-(iv), c-(ii), d-(i), which corresponds to option (D).