Bio 2010 - Microbiology » Summer 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.
endemic
B.
epidemic
C.
sporadic
D.
pandemic
Question #2
A disease vector is a(n) ____________________ .
A.
more than one of the answers are correct
B.
symptom of a disease
C.
organism that transmits a disease
D.
surface that it is found on
E.
environmental condition associated with a disease
Question #3
In terms of symbiotic relationships with the host, pathogenic microorganisms are generally
A.
normal microbiota.
B.
mutuals.
C.
commensuals.
D.
parasites.
Question #4
Microbes that only cause disease when the host has been injured or is immunocompromised are called:
A.
mutualistic pathogens.
B.
commensualistic pathogens.
C.
parasites.
D.
opportunistic pathogens.
Question #5
Which of the following are considered attachment factors?
A.
hyaluronidase
B.
adhesins (ligands)
C.
exotoxins
D.
endotoxins
Question #6
The __________ period is that phase where general, vague symptoms begin to appear; when a person realizes that they are becoming ill.
A.
decline
B.
incubation
C.
acme (critical)
D.
prodromal
Question #7
In epidemiological terms, __________ is the total number of existing cases of a disease.
A.
mortality
B.
prevalence
C.
incidence
D.
morbidity
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.
Vicarious immunity
B.
Threshold immunity
C.
Resistance effect
D.
Herd immunity
Question #9
Which of the following factors contribute to the spread of microorganisms and their diseases?
A.
Habitat destruction
B.
All of these
C.
Increased global travel
D.
Global climate change
Question #10
The lethal death/50 (LD50) is a value that refers to:
A.
The number of contaminating cells required to make 50% of those infected sick.
B.
The number of contaminating cells required to kill 50% of those infected
C.
The number of people who die from the infection
D.
The number of people living with the infection
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