The two substances that make bones rigid and strong are

a. mineral deposits and elastin fibers.
b. mineral deposits and reticular fibers.
c. mineral deposits and collagen fibers.
d. mineral deposits and calcium.

d

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Amprenavir is classified as which kind of drug?

A) Protease inhibitor B) Cephalosporin C) Nucleoside reverse transcriptase D) Macrolide

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Normal interval time for the PR interval is:

A) 0.04-0.12 second. B) 0.33-0.42 second. C) 0.12-0.20 second. D) 1.20-2.00 seconds.

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