The movement of both oxygen and carbon
dioxide in the body is accomplished by
a. exocytosis and endocytosis.
b. facilitated diffusion.
c. osmosis.
d. simple diffusion.
e. active transport
D
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A diagnostic test for M. tuberculosis exposure
A) utilizes an inflammatory reaction that occurs if there has been previous exposure to M. tuberculosis antigens. B) relies on previous tuberculin vaccination. C) uses an antiserum to detect antibodies in the blood that are only formed if there has been previous exposure to M. tuberculosis antigens. D) relies on an innate immune response that occurs only if there has been previous exposure to M. tuberculosis antigens.
Which of the following is an example of a commensal relationship?
a. A bird nesting in a tree b. A tapeworm living in a human c. A bee getting nectar from a flower d. Protozoa living inside termites
Nutrients and antibodies move across the placenta from mother to embryo or fetus, as do __________, which can
cause birth defects. Fill in the blank(s) with the appropriate word(s).
Match the type of circulatory system with the organism in which it is found.
A. Clams and oysters B. Grasshoppers C. Earthworms