Question

Consider the following statements regarding haemoglobin.

1. It contains iron.

2. It is a carrier of oxygen in the blood.

3. It impart is red colour to the blood.

4. It provides immunity against certain diseases.

• A. 1, 2 and 4 are correct.
• B. 1, 2 and 3 are correct.
• C. 1, 3 and 4 are correct.
• D. 2, 3 and 4 are correct.

Answer 1

The correct option is B 1, 2 and 3 are correct.

Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates as well as the tissues of some invertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs (lungs or gills) to the rest of the body (i.e. the tissues). There it releases the oxygen to permit aerobic respiration to provide energy to power the functions of the organism in the process called metabolism. Haemoglobin gives red colour to the blood. It does not provides immunity against certain diseases. Thus, option B is correct and other options are wrong.