TFHC Foodborne Illness and Pathogens 2

Question 1

Which toxin is produced by Staphylococcus aureus bacteria in food, and cannot be destroyed by cooking?

Accepted Answer

Staphylococcal enterotoxin

Answer

Staphylococcal enterotoxin is heat-stable, meaning even thorough cooking cannot destroy it once it has formed in the food.

Question 2

Which high-risk group is most vulnerable to severe complications from foodborne illness?

Accepted Answer

Elderly adults, young children, pregnant women, and immunocompromised individuals

Answer

These four groups have weakened or developing immune systems that make foodborne illness far more dangerous and potentially fatal for them.

Question 3

What is the incubation period for most foodborne illnesses?

Accepted Answer

30 minutes to several days

Answer

Symptoms of foodborne illness can appear as quickly as 30 minutes or as long as several days after eating contaminated food, depending on the pathogen.

Question 4

What bacteria produces a toxin in improperly canned or vacuum-sealed low-acid foods that can cause paralysis?

Accepted Answer

Clostridium botulinum

Answer

Clostridium botulinum produces botulinum toxin in anaerobic (low-oxygen) environments like canned or vacuum-sealed foods.

Question 5

Which common foodborne pathogen is found in the intestines of cattle and is linked to undercooked ground beef and contaminated produce?

Accepted Answer

E. coli O157:H7

Answer

E. coli O157:H7 is a Shiga toxin-producing bacterium found in cattle feces that can contaminate beef during slaughter or produce through irrigation water.

TFHC - Texas Food Handlers Certification Practice Test

TFHC - Texas Food Handlers Certification Practice Test

TFHC Foodborne Illness and Pathogens 2