Which of the following would NOT be used in connection with the word acid?
a. excess hydrogen ions
b. contents of the stomach
c. magnesium hydroxide
d. pH less than 7
e. HCl
C
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The general term for a state where two organisms live together in close association is ____
a. commensalism b. parasitism c. mutualism d. predation e. symbiosis
Which of the following is mismatched?
a. some free nerve endings; itching b. some free nerve endings; temperatures above and below those of the normal body core c. bulbs of Krause; thermoreception d. Meissner’s corpuscles; rapid-frequency vibrations e. Ruffini endings; steady touch and thermoreception
Pneumocystis jiroveci is
A) easy to grow in the laboratory. B) actually a protozoan and not a fungus. C) an obligate parasite that cannot survive outside the lungs. D) a common member of the human respiratory microbiota. E) a member of the human microbiota that is an obligate parasite.
Neisseria gonorrhoeae is:
A. the cause of ophthalmia neonatorum. B. the cause of gonorrhea. C. called the gonococcus. D. virulent due to fimbriae and a protease that inactivates IgA. E. All of the choices are correct.