A coral species that currently inhabits a single reef off the coast of Indonesia would be considered
A. vestigial.
B. a transitional form.
C. endemic.
D. exotic.
C. endemic.
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Which of the following statements is correct with respect to flagella and cilia?
A) Flagella display an oarlike pattern of beating. B) Cilia generate a force parallel to the cell surface. C) There are usually fewer cilia than flagella. D) Cilia are generally longer than flagella. E) Cilia often have a helical pattern of movement.
Approximately how many people exposed to cholera bacteria actually become ill?
a. one in ten b. 100 in 500 c. three in five d. 50 in 100 e. just about everybody
Understanding the risks in participating in a clinical trial and agreeing to participate is known as ________
A) the placebo effect B) the drug affect C) informed consent D) drug-drug interaction E) a double-blind study
The upper respiratory tract is lined with mucous membranes which secrete mucous. What is the purpose of mucous?
A) traps microbes and debris from the air we breathe B) cools and dries, and traps microbes from the air we breathe C) warms and humidifies, and traps microbes and debris from the air we breathe D) warms and humidifies the air we breathe E) cools and dries the air we breathe