Question

Choose the odd one out.

• A. antigen A
• B. antigen B
• C. Rh-factor
• D. haemoglobin

Answer 1

The correct option is D

haemoglobin

The odd option is (d).

Explanation of the correct option:

1. Hemoglobin is an iron pigment that is present in the RBCs.
2. It imparts red colour to the RBCs.
3. It binds with the oxygen and helps in transporting it to different parts of the body.

Explanation of the incorrect options:

Option A:

Antigen A is present in blood group A.

Option B:

Antigen B is present in blood group B.

Option C:

Rh-factor is a type of protein present on the surface of red blood cells.

Final answer: The odd one out among antigen A. antigen B, Rh-factor and hemoglobin is hemoglobin.