The majority of working American farmers are over what age?
A. 30
B. 40
C. 45
D. 50
E. 60
Answer: D. 50
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Match the following items with the correct phrases.
_______1. Acyclovir is specifically used as ____________________. _______2. ____________________ is any chemical or drug that is used to treat any disease or medical condition. _______3. ____________________ is a substance produced by a microorganism that is effective in killing or inhibiting the growth of another species of microorganism. _______4. Any drug used to treat an infectious disease is called ____________________. _______5. Amphotericin B is specifically used as ____________________. a. a chemotherapeutic agent b. an antibiotic c. an antifungal agent d. an antiviral agent e. an antimicrobial agent
Which of these genetic disorders is NOT inherited as
an autosomal dominant? a. phenylketonuria (PKU) b. achondroplasia c. Huntington disease d. polydactyly e. Marfan syndrome
Drier climates tend to prevail:a
on the windward side of mountains. b. in a rain shadow. c. close to the coast of the continent. d. in temperate regions. e. only in the northern hemisphere
Many pathogenic bacteria produce a(n)________ that protects them from phagocytosis by host cells
a. flagellum b. pilius c. capsule d. endospore