BIOL 2460- Exam 4 Review Questions and Correct Answers
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Course
BIO 2460
Institution
BIO 2460
Which of the following would be a sign of an infection?
A. muscle aches B. headache C. fever D. nausea C
Which of the following is an example of a noncommunicable infectious disease?
A. infection with a respiratory virus B. food poisoning due to a performed bacterial toxin in food C. skin infect...
BIOL 2460- Exam 4 Review Questions
and Correct Answers
Which of the following would be a sign of an infection?
A. muscle aches
B. headache
C. fever
D. nausea ✅C
Which of the following is an example of a noncommunicable infectious disease?
A. infection with a respiratory virus
B. food poisoning due to a performed bacterial toxin in food
C. skin infection acquired from a dog bite
D. infection acquired from the stick of a contaminated needle ✅B
During oral surgery, the surgeon nicked the patient's gum with a sharp instrument. This
allowed Streptococcus, a bacterium normally present in the mouth, to gain access to the
blood. As a result, the patient has developed bacterial endocarditis (an infection of the
lining of the heart). Which type of disease is this?
A. iatrogenic
B. nosocomial
C. vectors
D. zoonotic ✅A
Which period is the stage of disease during which the patient begins to present general
signs and symptoms?
A. convalescence
B. incubation
C. illness
D. prodromal ✅D
A communicable disease that can be easily transmitted from person to person is which
type of disease?
A. contagious
B. iatrogenic
C. acute
D. nosocomial ✅A
, Which of the following is a pathogen that could not be identified by the original Koch's
postulates?
A. Staphylococcus aureus
B. Pseudomonas aeruginosa
C. Human immunodeficiency virus (HIV)
D. Salmonella enterica servovar Typhimurium ✅C
Pathogen A has an ID50 of 50 particles, pathogen B has an ID50 of 1,000 particles, and
pathogen C has an ID50 of 1 × 106 particles. Which pathogen is most virulent?
A. pathogen A
B. pathogen B
C. pathogen C ✅A
Which of the following choices lists the steps of pathogenesis in the correct order?
A. invasion, infection, adhesion, exposure
B. adhesion, exposure, infection, invasion
C. exposure, adhesion, invasion, and infection
D. disease, infection, exposure, invasion ✅C
Which of the following would be a virulence factor of a pathogen?
A. a surface protein allowing the pathogen to bind to host cells
B. a secondary host the pathogen can infect
C. a surface protein the host immune system recognizes
D. the ability to form a provirus ✅A
You have recently identified a new toxin. It is produced by a gram-negative bacterium. It
is composed mostly of protein, has high toxicity, and is not heat stable. You also
discover it targets liver cells. Based on these characteristics, how would you classify this
toxin?
A. superantigen
B. endotoxin
C. exotoxin
D. leukocidin ✅C
Which of the following applies to hyaluronidase?
A. it acts as a spreading factor
B. it promotes blood clotting
C. it is an example of an adhesion
D. it is produced by immune cells to target pathogens ✅A
Phospholipases are enzymes that do which of the following?
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