What is found within a small intestinal villus?
a. blood and lymph vessels
b. enzymes
c. secretory glands
d. chyme
e. smooth muscle
ANSWER: a
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) Places of economic activity organized around one or more high-growth industries are known as
A) growth poles. B) north poles. C) economic poles. D) industrial poles. E) government poles.
All vertebrates have ________.
A. a skull and a backbone B. four limbs and a backbone C. hair and a backbone D. scales and a backbone
In 20-40% of men past puberty, the mumps virus can cause
a) orchitis. b) liver damage. c) fever. d) death.
The condition known as microbial antagonism may be defined as
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