The functional units of the mammary gland are the _____.
A. alveoli
B. secretory cells
C. myoepithelial cells
D. lobes
E. areolas
Answer: A
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For the prevention of osteoporosis, strength training is
A. not recommended because it increases testosterone levels. B. recommended because it decreases estrogen levels. C. recommended because the stress on bones stimulates bone maintenance. D. not recommended because it increases fracture risk.
Wave of muscle contraction in the intestine that moves food along is know as _______.
A. active transport B. systole C. peristalsis D. tetany
The transport of substances across a cell membrane with the aid of a carrier molecule and the expenditure of energy is
a) active transport. b) facilitated diffusion. c) osmosis. d) simple diffusion.
Genes are affected by food or the components of food
Indicate whether the statement is true or false