11.2.23 Closing Question Preview (ID: 62371)


BIOL20/20N. TEACHERS: click here for quick copy question ID numbers.

Which of the following is the correct term for describing the number of Pathogens or amount of toxin required to kill 50% of inoculated populations?
a) ID50
b) TD 50
c) LD50
d) LD60

Which of the following terms is used to describe the degree to which an organism is pathogenic?
a) Avirulent
b) Virulent
c) Pathogenicity
d) Symptoms

In which of the following diseases symptoms develop slowly; pathologic changes can occur over longer time spans?
a) Acute
b) Nosocomial
c) Iatrogenic
d) Chronic

Which of the following is the period in which disease is most severe?
a) Period of Convalescence
b) Period of Illness
c) Prodromal Period
d) Incubation Period

In which disease causal pathogen goes dormant for extended periods of time with no active replication but then activates and produces symptoms?
a) Infectious
b) Iatrogenic
c) Nosocomial
d) Latent

Zoonotic diseases are transmitted from?
a) humans to animals
b) animals to human
c) animals to animals
d) humans to humans

Which of the following is the first period of disease?
a) Prodromal Period
b) Period of Illness
c) Incubation Period
d) Period of Decline

How are iatrogenic diseases caused?
a) contracted as the result of a medical procedure
b) transmitted from animals to humans
c) acquired in hospital settings
d) acquired in school settings

Which of the following is a sign?
a) Sneezing
b) Chills
c) Body Temperature
d) Dizziness

Diseases that are easily and rapidly spread from one host to another?
a) Contagious
b) Noninfectious
c) Infectious
d) Noncommunicable

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