AAB Hematology Exam with Questions and Solutions

AAB Hematology Exam with Questions and Solutions What is hemoglobin compromised of? a. 4 heme, 4 iron, 4 globulins b. 4 heme, 4 iron, 1 globulin c. 2 heme, 2 iron, 2 globulins d. 1 heme, 1 iron, 1 globulin ANSWER b. 4 heme, 4 iron, 1 globulin What disorder does a defect in heme synthesis lead to? a. hemoglobinopathy b. coagulopathy c. thalassemia d. porphyria ANSWER d. porphyria What is the function of the enzyme methemoglobin-cytochrome C reductase in a RBC? a. to keep iron in the ferric state b. to keep iron in the ferrous state c. to maintain an anaerobic pathway for glycolysis d. to maintain an aerobic pathway for the Krebs cycle ANSWER b. to keep iron in the ferrous state Which hemoglobin has a 200 times greater binding capacity for the hemoglobin molecule than oxygen?