Because of the hepatic portal vein, the ________ is the first organ to receive most of the products of digestion.
A. pancreas
B. liver
C. heart
D. kidney
E. brain
Answer: B
Biology & Microbiology
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In adult vertebrates, which of these is not one of the four principal kinds of primary tissues?
A. epithelial B. connective C. supportive D. muscle E. nerve
Biology & Microbiology
An example of an osmoregulator at low salinities and an osmoconformer at higher salinities is a(n):
a. blue crab. b. salmon. c. oyster. d. sea squirt. e. tuna.
Biology & Microbiology
Predators often avoid a mimic species because of
a. its bad taste. b. its toxic secretion. c. its resemblance to a model species. d. its painful sting. e. all of these.
Biology & Microbiology
Which of the following is not a potential effect of alcohol abuse?
A) impaired judgment B) lung cancer C) higher blood pressure D) liver cirrhosis
Biology & Microbiology