What is a primary function of the hormone calcitonin?
A. Initiates stress response
B. Raises blood glucose level
C. Stimulates uptake of calcium from blood into bones
D. Stimulates intestinal absorption of calcium
E. Lowers blood glucose level
Answer: C
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Which would be TRUE of comparing the DNA fingerprints from hair samples of identical twins?
A. Some bands match. B. No bands match. C. Every band matches. D. Exactly 50% of the bands match. E. Most bands match.
The process of emulsification is crucial to the digestion of
A. carbohydrates. B. lipids. C. nucleic acids. D. proteins. E. bile salts.
The process by which cells acquire specialized forms and functions is called
A. cell differentiation. B. cell replication. C. cell growth. D. cell elasticity. E. None of the choices are correct.
If the epithelium that lines the air sacs of your lungs were to gain a layer of cells, which of the following would likely occur to the rate of oxygen diffusion?
A) Oxygen will diffuse across the lung surface more quickly. B) Oxygen will diffuse across the lung surface more slowly. C) Oxygen will diffuse across the lung surface out of, instead of into, the body. D) Oxygen will diffuse across the lung surface at a normal rate because it is only the shape of the cells that affect diffusion rate.