The first vaccinated organism was a
a. cow.
b. rat.
c. young boy.
d. mouse.
e. dog.
Answer: c
Biology & Microbiology
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If a restriction endonuclease cuts a circular DNA three times, how many fragments should there be after the DNA is
subjected to electrophoresis through an agarose gel?
a. 1 b. 2 c. 3 d. 4 e. 5
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The partial pressure of atmospheric oxygen gas at sea
level is about a. 0.3 mm Hg. b. 160 mm Hg. c. 300 mm Hg. d. 592 mm Hg. e. 745 mm Hg.
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Cardiac output is obtained by multiplying stroke volume by heart rate. Indicate whether the statement is true or false
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What advantage do ferns have over bryophytes?
A. Ferns photosynthesize B. Ferns are heterotrophs. C. Ferns have a vascular system, which allow them to grow taller. D. Ferns do not require water to reproduce. E. Ferns have alternation of generations.
Biology & Microbiology