★ Molecular Biology Quiz
Which activity would supply the most oxygen to the body for digestion and respiration?
A. sit-ups
B. running
C. stretching
D. lifting weights
Select your answer:
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Food and Nutrition › ViewWhich organ is labelled X in the drawing?
A. small intestine
B. stomach
C. liver
D. mouth
Urinary System › View
tough exterior layer of kidney
A. Renal capsule
B. Renal cortex
C. Renal medulla
D. Renal pyramid