After the completion of meiosis in humans, a diploid germ cell has produced cells with half the original chromosome number, generating __________ haploid nuclei.
a)2
b)3
c)4
d)23
e)46
c)4
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Enlargement of lymph nodes or spleen is often associated with
A. tularemia. B. brucellosis. C. plague. D. gastritis. E. tularemia, brucellosis AND plague.
Plants and algae most recently shared a common ancestor 480 million years ago, and plants colonized land shortly after that. In sexual reproduction, an alga simply releases gametes into the water, and the current carries the sex cells to another individual. What adaptation arose in gymnosperms and angiosperms that allowed reproduction on dry land and over great distances?
A. development of stomata B. production of lignin C. development of vascular tissue D. production of pollen E. production of a cuticle
A contributing factor to cutaneous candidiasis might be
A) a shift in normal microbiota. B) a shift in normal microbiota and hyperactive immune function. C) dry, exposed skin. D) dry, exposed skin and hyperactive immune function. E) hyperactive immune function.
A potential drug for the treatment of prion disease would be
a. a protease because prions are made only of protein. b. a ribonuclease because prions are made only of nucleic acid. c. a nucleoside inhibitor to prevent formation of new nucleotides. d. none of the above.