Student Center | Instructor Center | Information Center | Home

	Biocourse.com
	NetTutor
	Web Links
	Information on Anthrax
	Microbiology in the News
	Careers in Microbiology
	Study Tips
	Correlation Guide to MiM III
	Glossary A-F
	Glossary G-L
	Glossary M-R
	Glossary S-Z
	Clinical Case Studies
	Interactive Time Line
	Lab Sequence Data


	Chapter Overview
	Chapter Objectives
	Study Outline
	Chapter Web Links
	Web Exercises
	Flash Cards
	Self-Quiz
	True or False

	Feedback Help Center

Microbiology, 5/e

Lansing M Prescott, Augustana College
Donald A Klein, Colorado State University
John P Harley, Eastern Kentucky University

Normal Microbiota and Nonspecific Host Resistance

Multiple Choice Quiz

Choose the best answer


1	A majority of the microorganisms associated with the human body are
		A)	protozoa.
		B)	bacteria.
		C)	fungi.
		D)	viruses.
		E)	parasites.


2	The dynamics of the microorganisms associated with the human body are most commonly to be all of the following EXCEPT
		A)	symbiotic.
		B)	mutualistic.
		C)	pathogenic.
		D)	commensalistic.
		E)	None of the above.


3	Germfree animals are almost completely resistant to the intestinal protozoan that causes amebic dysentery because of
		A)	a thin intestinal wall.
		B)	a low antibody titer.
		C)	a lower metabolic rate.
		D)	the absence of a bacterial food source.
		E)	a reduced cardiac input.


4	A pimple contains all BUT the following
		A)	sebun.
		B)	keratin.
		C)	viruses.
		D)	bacteria.
		E)	lipases.


5	Which genus of bacterium contributes to plaque, caries, gingivitis, and periodontal disease?
		A)	Streptococcus
		B)	Staphylococcus
		C)	Bacillus
		D)	Escherichia
		E)	Proteus


6	The stomach usually contains a very low concentration of bacteria due to
		A)	the neutral pH.
		B)	the high pH.
		C)	the low pH.
		D)	the high turnover rate of contents.
		E)	the inhibitory action of bile.


7	Disruptive factors to microbial status quo in the intestine include all BUT
		A)	stress.
		B)	desquamation of epithelial cells.
		C)	change in altitude.
		D)	starvation.
		E)	parasitic organisms.


8	Probiotics exhibit all BUT the following characteristics:
		A)	Nontoxic and nonpathogenic to host
		B)	Have beneficial effect on host
		C)	Mimic antibiotics
		D)	Remain viable for a long time
		E)	Withstand acidic nature of host’s stomach


9	Which of the following may result in an immunocompromised host?
		A)	Alcoholism
		B)	Diabetes
		C)	Cancer
		D)	All of the above
		E)	None of the above


10	Lymphocytes are the major cells of the specific immune system, including
		A)	T cells.
		B)	B cells.
		C)	Natural killer cells.
		D)	All of the above.
		E)	None of the above.


11	Macrophages have all the following properties EXCEPT
		A)	Are derived from granulocytes
		B)	May be larger than monocytes
		C)	Have a plasma membrane covered with ruffles or microvilli
		D)	Possess receptors for carbohydrates not normally exposed on the cells of vertebrates
		E)	None of the above


12	Which of the following corresponds to secondary lymphoid tissue?
		A)	Thymus
		B)	Bone marrow
		C)	Spleen
		D)	Lymph nodes
		E)	None of the above


13	The complement system aids the host defense by
		A)	Mediating inflammation
		B)	Attracting phagocytic cells
		C)	Activating phagocytic cells
		D)	All of the above
		E)	None of the above


14	The complement system acts in a _________ fashion, amplifying the response.
		A)	synergistic
		B)	cascade
		C)	avalanche
		D)	classical
		E)	mutualistic'


15	Phagocytosis DOES NOT involve
		A)	Lectin-carbohydrate interactions
		B)	Protein-protein interactions
		C)	Hydrophobic interactions
		D)	Hygroscopic interactions
		E)	Phagolysosomes


16	Which of the following is a generic term for a protein or glycoprotein released by one cell population that acts as an intercellular mediator?
		A)	Cytokine
		B)	Monokine
		C)	Lymphokine
		D)	Interleukin
		E)	Colony-stimulating factor

2002 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.