Mammals underwent an evolutionary "explosion", or major adaptive radiation, during the ____
a. Mesozoic era
b. Cambrian period
c. Triassic period
d. Devonian period
e. Cenozoic era
ANSWER: a
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A test that uses gelatin particles sensitized with T. pallidum subsp. pallidum antigens to detect specific antitreponemal antibodies in patient serum is called the __________ test
a. RPR b. FTA-ABS c. VDRL d. TP-PA
HIV carries an enzyme called reverse transcriptase, which functions to ________
a. penetrate the cell membrane b. copy viral RNA into viral DNA c. copy viral DNA into viral RNA d. destroy the host cell genome
Extra fluid that leaks out of the capillary bed
enters
a. the surrounding cells. b. the lymphatic system. c. the venules. d. the capillary again. e. the adjoining arterioles
Which type of cell junction acts as anchors and distributes tension through a cellular sheet and reduces the chance of tearing when it is subjected to great mechanical stress?
A. tight junctions B. connexons C. gap junctions D. desmosomes