Which drug, if taken during pregnancy, results in infants with severely deformed arms and legs?
a. tetracycline
b. thalidomide
c. streptomycin
d. salicylic acid
e. codeine
B
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The most common eukaryotic ribosome carries out its function in the
A. Golgi apparatus. B. nucleus. C. cytosol. D. mitochondria. E. chloroplast.
During extended periods of dehydration,
tardigrades a. enter suspended animation. b. migrate to the soil subsurface. c. enter small ponds and lakes. d. climb inside a plant leaf and encyst. e. none of these
What is the function of macrophages during infection by a pathogen?
A. to kill the pathogen by directly damaging its cell membrane B. to phagocytize the pathogen C. to produce antibodies D. all of the above
Select the best choice for the following statements in reference to the four hominids listed below.
A. Homospecies whose fossils were discovered with stone tools in Kenya. B. The first species found outside of Africa and established a population in the Republic of Georgia. C. The only surviving Homo species. D. The Neanderthals belong to this species.