The light-colored zone adjacent to the nucleus in a plasmacyte is the:
A. ribosome
B. chromatin
C. mitochondria
D. Golgi area - ANSWER-D. Golgi area
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
Cells for the transport of O2 and CO2 are:
A. erythrocytes
B. granulocytes
C. lymphocytes
D. thrombocytes - ANSWER-A. erythrocytes
Erythropoeitin acts to:
A. shorten the replication time of the granulocytes
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