QUESTIONS AND SOLUTIONS GRADED A+
PREMIUM RESOURCE
●● The majority of the iron in an adult is found as a constituent of:
A. hemoglobin
B. hemosiderin
C. myoglobin
D. transferrin.
Answer: A. hemoglobin
●● The main function of the hexose monophosphate shunt in the
erythrocyte is to:
A. reglate the level of 2,3-DPG
B. provide reduced glutathione to prevent oxidation of hemoglobin
C. prevent the reduction of heme iron
D. provide energy for membrane maintenance.
Answer: B. provide the level 2,3-DPG
,●● In order for hemoglobin to combine reversibly with oxygen, the iron
must be:
A. complexed with haptoglobin
B. freely circulating in the cytoplasm
C. attached to transferrin
D. in the ferrous state.
Answer: D. in the ferrous state
●● In which of the following disease states are teardrop cells and
adnormal platelets most characteristically seen?
A. hemolytic anemia
B. multiple myeloma
C. G-6-PD deficiency
D. myeloid metaplasma.
Answer: D. myeloid metaplasia
●● In the normal adult, the spleen acts as a site for:
A. storage of red blood cells
B. production of red blood cells
C. synthesis of erythropoietin
, D. removal of imperfect and aging cells.
Answer: D. removal of imperfect and aging cells
●● After removal of red blood cells from the circulation hemoglobin is
broken down into:
A. iron, porphyrin, and amino acids
B. iron, protoporphyrin, and globin
C. heme, protoporphyrin, and amino acids
D. heme, hemoseridin, and globin.
Answer: B. iron, protoporphyrin, and globin
●● Heinz bodies are:
A. readily identified with polychrome stains
B. rarely found in glucose-6-phosphate dehydrogenase deficient
erythrocytes
C. closely associated with spherocytes
D. denatured hemoglobin inclusions that are readily removed by the
spleen.
Answer: D. denatured hemoglobin inclusions that are readily removed
by the spleen