The disease sickle cell anemia is an example of what can happen if
A) the diet is deficient in iron.
B) there is insufficient heme in the hemoglobin.
C) a gene for adult hemoglobin is abnormal.
D) red blood cells bind too much oxygen.
E) hemolysis is prevented by a mutated gene.
Question 2
The element that is necessary for the proper function of the enzyme carbonic anhydrase is
A) iron.
B) cobalt.
C) zinc.
D) selenium.
E) iodine.