NEET PG DENTAL EXAM

Detailed explanation-1: -Hemoglobin is made up of four protein chains that each bind an additional ring-shaped chemical structure called heme . Our red blood cells are red because of the heme groups in hemoglobin. In turn, our blood is red because of the millions of red blood cells that it contains.

Detailed explanation-2: -Red blood cells get their bright red color from a protein that allows them to carry oxygen from your lungs and deliver it to other tissues in your body (hemoglobin). Red blood cells are microscopic and have the shape of a flat disk or doughnut, which is round with an indentation in the center, but it isn’t hollow.