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WorksheetsDay 14: Virulence Factors
Total questions: 10
Worksheet time: 5mins
Botulinum toxin is an example of a(n):
Carbohydrate
Exotoxin
Endotoxin
LPS
Which of the following would be a sign of an infection?
Muscle aches
Fever
Headache
Dizziness
The ______ is the time that lapses between encounter with a pathogen and the first symptoms
Period of convalescence
Period of invasion
Period of incubation
Prodromal period
Endotoxins are associated with Gram-negative bacteria and are part of their cell _______ and are released when the cell ________/___________, while exotoxins are produced and released by Gram-positive and some Gram-negative bacteria and are called _________ if they affect the nervous system and _________ if they affect the digestive system.
membrane; shrivels/enlarges; leukocidins; hemolysins
walls; divides/dies; neurotoxins; enterotoxins
cycle; shrivels/enlarges; hemolysins; leukocidins
flagella; divides/dies; enterotoxins; neurotoxins
A short period early in a disease that manifests with general malaise and achiness is the:
Period of convalescence
Period of incubation
Prodromal period
Period of invasion
Which of the following applies to hyaluronidase?
It acts as a spreading factor
It is produced by immune cells to target pathogens
It is an example of an adhesin
It promotes blood clotting
Pathogen A has an ID50 of 50 particles, Pathogen B has an ID50 of 1000 particles, and Pathogen C has an ID50 of 1X106 particles. Which pathogen is most virulent?
A
B
All are equally virulent
C
Which of the following is not a portal of entry for pathogens?
Blood
Parenteral route
Mucous membranes of the respiratory tract
Mucous membranes of the GI tract
Which of the following choices lists the steps of pathogenesis in the correct order?
invasion, infection, adhesion, exposure
adhesion, exposure, infection, invasion
exposure, adhesion, invasion, infection
disease, infection, exposure, invasion
A positive antibody test for HIV would be a ______ of infection
Symptom
Syndrome
Sequela
Sign
