Assertion (A): An antibody is represented as H2L2. Reason (R): An antibody has two heavy chains and two light chains.

Question

Assertion (A): An antibody is represented as H2L2.

Reason (R): An antibody has two heavy chains and two light chains.

1. A. Both (A) and (R) are true and (R) is the correct explanation of (A). (Correct answer)
2. B. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. C. (A) is true, but (R) is false
4. D. (A) is false, but (R) is true

Correct Answer

Option A — Both (A) and (R) are true and (R) is the correct explanation of (A).

Detailed Solution & Explanation

The correct answer is Both (A) and (R) are true and (R) is the correct explanation of (A)..

Key Points

• An antibody (immunoglobulin) is indeed represented as H2L2 - consisting of 2 identical heavy chains and 2 identical light chains linked by disulfide bonds.
• R correctly explains why the notation H2L2 is used.