NEET PG DENTAL EXAM

Detailed explanation-1: -Hemoglobin is an oxygen-binding protein molecule. With oxygen, hemoglobin forms an unstable, reversible bond. It is brilliant red in its oxygen-loaded state, which is called oxyhemoglobin.

Detailed explanation-2: -As oxygen diffuses across the respiratory membrane from the alveolus to the capillary, it also diffuses into the red blood cell and is bound by hemoglobin. The following reversible chemical reaction describes the production of the final product, oxyhemoglobin (Hb–O2), which is formed when oxygen binds to hemoglobin.

Detailed explanation-3: -Oxyhemoglobin is the normal, oxygen-carrying form of hemoglobin in which iron is in the reduced (ferrous) state. Methemoglobin is a nonfunctional form of hemoglobin in which ferrous iron is oxidized to ferric iron. Methemoglobin is nonfunctional because it cannot bind oxygen.