Which of the following is NOT a parasitic
roundworm infection of humans?
a. trichinosis
b. pinworm
c. schistosomiasis
d. hookworm
e. elephantiasis
Answer: c
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Why have so few primates gone extinct compared to other groups, for example, mussels or birds?
a. they have large brains b. they are not killed for food or other human uses c. they live in stable environments d. they are among the most closely monitored and protected species e. they are highly mobile
During metaphase I, ________
A) crossing over occurs B) homologous chromosomes line up in the middle of the cell C) the nuclear envelope breaks up D) sister chromatids separate and migrate to opposite poles
Which phylum of nonvascular plants has about 10 000 known living species, including those in the genus Sphagnum?
a. Pterophyta b. Hepatophyta c. Lycophyta d. Bryophyta
A chemical reaction that requires an input of energy in order to proceed is ________.
A. endergonic B. impossible C. exergonic D. None of the choices are correct.