
★ Composition of Blood and Blood Cells Quiz
Identify the substance labeled “B” in this vial of blood.
A. Buffy Coat (platelets and WBCs)
B. Formed Elements (RBC)
C. Plasma
Select your answer:

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The Cardiovascular System OCR A-level › ViewWhich is the correct calculation for working out cardiac output?
A. stroke volume / time
B. stroke volume x heart rate
C. cardiac output = heart rate/ time
D. heart rate/ stroke volume.
Biology › View
This picture is a good example of
A. Growth
B. Development
C. Organelle
D. Cell