Which of the following elements is needed to make a functional hemoglobin molecule?
A) magnesium
B) iodine
C) iron
D) potassium
E) chlorine

Question

Quizplus · Accepted Answer

Hemoglobin is a protein in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs. Hemoglobin contains iron, which is necessary for it to bind to oxygen and perform its function. None of the other choices listed are required for hemoglobin's function.

Which of the Following Elements Is Needed to Make a Functional