★ Blood Formation and Clotting Quiz
What is the name of the common stem cell from which all blood cells are derived?
A. megakaryocytes
B. hempocytoblast
C. lymphoid cells
D. myeloid cells
Select your answer:

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B. ligament
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Which class of macromolecules is most affected by a change in pH?
A. Protein
B. Carbohydrate
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