Multiple Choice Quiz


1	Treponema pallidum is cultured in/on
		A)	blood agar
		B)	animal tissues
		C)	serum broth
		D)	eggs


2	A gumma is
		A)	the primary lesion of syphilis
		B)	a syphilitic tumor
		C)	the result of congenital syphilis
		D)	a damaged aorta


3	The treatment of choice for syphilis is:
		A)	tetracycline
		B)	antiserum
		C)	penicillin
		D)	sulfa drugs


4	Which of the treponematoses are not STDs?
		A)	yaws
		B)	pinta
		C)	syphilis
		D)	both a and b


5	Lyme disease is caused by ______ and spread by ______.
		A)	Borrelia recurrentis, lice
		B)	Borrelia hermsii, ticks
		C)	Borrelia burgdorferi, chiggers
		D)	Borrelia burgdorferi, ticks


6	Relapsing fever is spread by
		A)	lice
		B)	ticks
		C)	animal urine
		D)	a and b


7	The primary habitat of Vibrio cholerae is
		A)	intestine of humans
		B)	intestine of animals
		C)	natural waters
		D)	exoskeletons of crustaceans


8	The best therapy for cholera is
		A)	oral tetracycline
		B)	oral rehydration therapy
		C)	antiserum injection
		D)	oral vaccine


9	Rickettsias and chlamydias are similar in being
		A)	free of a cell wall
		B)	the cause of eye infections
		C)	carried by arthropod vectors
		D)	obligate intracellular bacteria


10	Which of the following is not an arthropod vector of rickettisoses?
		A)	mosquito
		B)	louse
		C)	tick
		D)	flea


11	Chlamydiosis caused by C. trachomatis attacks which structure(s)?
		A)	eye
		B)	urethra
		C)	fallopian tubes
		D)	all of these


12	Ornithosis is a _____ infection associated with ______
		A)	rickettsial, parrots
		B)	chlamydial, mice
		C)	chlamydial, birds
		D)	rickettsial, flies


13	Mycoplasmas attack the _______ of host cells.
		A)	nucleus
		B)	cell walls
		C)	ribosomes
		D)	cell membranes


14	The earliest process that is at the basis of most dental disease is
		A)	acquired pellicle
		B)	acid release
		C)	enamel destruction
		D)	plaque accumulation


15	Dental caries are directly due to
		A)	microbial acid etching away tooth structures
		B)	build-up of calculus
		C)	death of tooth by root infection
		D)	the acquired pellicle


16	Acute necrotizing ulcerative gingivitis is a ______ infection
		A)	contagious
		B)	mixed
		C)	spirochete
		D)	systemic

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