Bio 2010 - Microbiology » Spring 2023 » Chapter 14 Quiz

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Question #1
Diseases that are always present in a community, usually at a low, more or less constant, frequency are classified as having an ____________ pattern.
A.   epidemic
B.   endemic
C.   sporadic
D.   pandemic
Question #2
A disease vector is a(n) ____________________ .
A.   environmental condition associated with a disease
B.   organism that transmits a disease
C.   more than one of the above is correct
D.   symptom of a disease
E.   surface that it is found on
Question #3
In terms of symbiotic relationships with the host, pathogenic microorganisms are generally
A.   commensuals.
B.   normal microbiota.
C.   mutuals.
D.   parasites.
Question #4
Microbes that only cause disease when the host has been injured or is immunocompromised are called:
A.   mutualistic pathogens.
B.   parasites.
C.   commensualistic pathogens.
D.   opportunistic pathogens.
Question #5
Which of the following are considered attachment factors?
A.   hyaluronidase
B.   endotoxins
C.   adhesins (ligands)
D.   exotoxins
Question #6
The __________ period is that phase where general, vague symptoms begin to appear; when a person realizes that they are becoming ill.
A.   prodromal
B.   acme (critical)
C.   decline
D.   incubation
Question #7
In epidemiological terms, __________ is the total number of existing cases of a disease.
A.   incidence
B.   prevalence
C.   morbidity
D.   mortality
Question #8
The resistance of a population to infection and pathogen spread due to the immunity of a large presence of the population is known as:
A.   Herd immunity
B.   Threshold immunity
C.   Vicarious immunity
D.   Resistance effect
Question #9
Which of the following factors contribute to the spread of microorganisms and their diseases?
A.   Increased global travel
B.   All of these
C.   Global climate change
D.   Habitat destruction
Question #10
The lethal death/50 (LD50) is a value that refers to:
A.   The number of contaminating cells required to kill 50% of those infected
B.   The number of people who die from the infection
C.   The number of people living with the infection
D.   The number of contaminating cells required to make 50% of those infected sick.

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