Which of the following would work as an antidote for someone who was bitten by a black
widow spider?
a. a drug that blocks the sodium–potassium pump
b. a drug that causes potassium gates to open
c. a drug that blocks acetylcholine binding sites
d. a drug that stimulates the release of calcium
C
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Which flagellate(s) have modified mitochondria and make ATP without oxygen?
a. trypanosomes b. euglenoids c. rhizarians d. diplomonads and parabasalids e. diatoms and brown algae
Transmission of malaria is by way of the __, which is the ___host.
A. anopheles mosquito, definitive B. anopheles mosquito, intermediate C. aedes mosquito, definitive D. aedes mosquito, intermediate
Which of the following types of radiation is nonionizing and has the shortest wavelength?
A) ultraviolet light B) infrared radiation C) microwaves D) X rays E) gamma rays
Host specificity of a virus is due to
A) particular genes that it shares with the infected cell. B) the presence of an envelope. C) differences in size between the virus and the host cell. D) the presence or absence of a cell wall on the host cell. E) interactions between viral and cellular surface molecules.