Bacillus, Listeria, Corynebacterium, Clostridium

Question 1

What is unique about bacillus and clostridium?

Answer 1

They produce spores. Bacillsu is aerobic, Clostridium is anaerobic

Question 2

B. cereus spores create which symptoms

Answer 2

emetic syndrome (rapid onset within 5 hours, vomitting, fried rice) and diarrheal syndrome (slow onset 8-16 hours after eating)

Question 3

How are B. cereus symptoms treated?

Answer 3

Supportive care (fluids)

Question 4

How is bacillus anthracis differentiated?

Answer 4

It is NONMOTILE while other bacillus are motile

Question 5

What are the three clinical manifestations of anthrax toxin released by bacillus anthracis?

Answer 5

GI anthrax, cutaneous anthrax, inhalation anthrax

Question 6

You have a gram positive, spore-forming rod. If it is then tested and shown to be nonmotile, what bacteria is it?

Answer 6

bacillus anthracis

Question 7

This gram positive, spore-forming, motile bacteria is used to test autoclave efficacy

Answer 7

bacillus stearothermophilus

Question 8

Describe clostridium

Answer 8

gram positive, spore-forming, anaerobic, rod shaped, look like tennis racket, found in soil/water/GI tracts

Question 9

Clostridium perfringens causes…

Answer 9

food poisoning, gas gangrene

Question 10

What are the three types of botulism?

Answer 10

food-borne, infant, wound

Question 11

What is unique about listeria?

Answer 11

gram positive, coccobaccillus, does not produce toxins or enzymes, virulence related to bacteria’s ability to live within cells

Question 12

What disease does corynebacterium cause?

Answer 12

diptheria toxin produced, which inhibits protein syntehsis causing cell death.