If a large 10-km asteroid or comet struck the Earth in the ocean floor, I. large amounts of molten rock would rain down on Earth and cause massive forest fires. II. giant tidal waves would result III. after effects would cause the deaths of most animal life on the planet. IV. thick clouds of dust would form and block out the Sun for an extended period
a. I & IV
b. II & III
c. I, II, & III
d. I, II, III & IV
e. II, III, & IV
d
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The Ti plasmid is used as a vector to transfer DNA into
A. viruses. B. bacteria. C. plant cells. D. animal cells.
In the figure above, representing transcription, the item labeled "B" is
a. the nontemplate strand. b. RNA-DNA hybrid. c. DNA double helix. d. the RNA copy. e. the template strand.
Which of the following is a correct difference
between the pectoral girdle and the pelvic girdle?
a. the pectoral girdle has more bones b. the pectoral girdle includes the patella and the pelvic girdle includes the radius c. the bones of the pelvic girdle are fused; the bones of the pectoral girdle are not d. the bones of the pelvic girdle are part of the upper body; the bones of the pectoral girdle are a part of the lower body e. more than one of these is a correct difference between the pectoral and the pelvic girdle
Which of the following diseases is caused by Candida?
A. oral thrush B. tinea C. histoplasmosis D. ringworm