★ Composition of Blood and Blood Cells Quiz
________ is a major component of hemoglobin that carries oxygen to all parts of the body.
A. copper
B. magnesium
C. potassium
D. iron
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This is a blood smear. What type of cell is indicated by the YELLOW arrow?
A. erythrocyte (RBC)
B. megakaryocyte
C. leukocyte (WBC)
D. thrombocyte (platelet)
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