What element is central to all the structures of a hemoglobin molecule?
A) Nitrogen
B) Iron
C) Water
D) Oxygen

Question

Quizplus · Accepted Answer

The element central to all the structures of a hemoglobin molecule is iron. Hemoglobin is a protein that consists of four subunits, each of which contains a heme group. The heme group is a complex organic molecule that contains an iron atom at its center, and it is this iron atom that binds to oxygen and carries it around the body.

What Element Is Central to All the Structures of a Hemoglobin