★ Circulatory and Respiratory System Quiz
__________________ rush to the site of a cut and produce ____________, which forms a protective covering over the cut.
A. platelets, fibrin
B. plasma, white blood cells
C. red blood cells, hemoglobin
D. white blood cells, fibrin
Preview next quiz:
The protein molecule that carries oxygen in your red blood cells is ______________.
A. hemoglobin
B. plasma
C. platelets
D. carbon dioxide
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