BHS 329 Midterm Questions and Correct Answers/ Latest Update / Already Graded

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BHS 329 Midterm Questions and Correct
Answers/ Latest Update / Already Graded
Pathogenicity

Ans: qualities that promote the production of disease


Virulence

Ans: potency of the pathogen indicated by the ratio of the
number of cases compared to number of exposures


Infectivity

Ans: proportion of exposures needed to cause infection in an
individual


Toxigenicity

Ans: ability of the pathogen to produce harmful toxins that
increase host cell and tissue damage


Antigenicity

Ans: level to which a pathogen is viewed by the host immune
system as foreign


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Antigenic variability

Ans: process of eluding the human host defenses, often
consists of altering antigen presentation


Pathogenic defense mechanisms

Ans: ways in which a pathogen has developed to avoid
destruction by host


Coinfection

Ans: hosting two or more pathogens simultaneously


Superinfection

Ans: when an infection arises in addition to one that is already
present


Endotoxin

Ans: complex of phospholipid-polysaccharide molecules that
form the structural component of the gram-negative cell wall,
causes inflammatory response when bacterium is lysed



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Exotoxins

Ans: potent substances that result in host cell dysfunction or
lysis


Neisseria meningitidis

Ans: meningitis


Streptococcus pyogenes

Ans: - septicemia
- myositis
- necrotizing fascitis


Streptococcus pneumoniae

Ans: - pneumonia
- meningitis
- otitis media


Staphylococcus aureus

Ans: - endocarditis
- cellulitis


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