Final Exam - Dr. Olson Questions

Question 1

What is the most common mode of transmission of C. jejune into people?

a) fecal-oral
b) food
c) nosocomial (hospital-derived)
d) inhalation

Answer 1

b) food

Question 2

How many cases per year of Campylobacteriosis are estimated yearly in the US?

a) 2,400
b) 24,000
c) 240,000
d) 2,400,00

Answer 2

d) 2,400,00

Question 3

Which animals have the most severe pathology when infected with C. jejune?

a) Humans
b) Cows
c) Turkeys
d) Pigs

Answer 3

a) Humans

Question 4

What kind of activity does the C. jejune exotoxin CdB have?

a) ADP-ribosyl transferase
b) inhibits acetylcholine uptake
c) it is a nuclease
d) it reorganizes the cell cytoskeleton

Answer 4

c) it is a nuclease

Question 5

What is NOT a respiratory substrate for C. jejuni?

a) Hydrogen
b) Formate
c) NADH
d) Flavodoxin

Answer 5

c) NADH

Question 6

Suppose someone you know got infected with Campylobacter over Thanksgiving break. The friend of yours is a vegetarian, so she did not eat any meat. She did eat the following items:

mashed potatoes (no gravy)
sweet potatoes w/o melted marshmallows
lettuce salad w/ fresh vegetables
biscuits
green bean casserole
white wine
pumpkin pie

Which item do you think gave her the bacteria and how did it get contaminated?

Answer 6

lettuce salad w/ fresh vegetables

it was not properly cooked and there could have been a poorly sanitized cutting board.