360 Training Food Handlers Practice Exam

Where does E. coli typically grow?

1. In freshwater sources

2. On fruits and vegetables

3. Inside mammals and their products

4. In soil environments

The correct answer is: Inside mammals and their products

E. coli typically grows inside mammals, including humans, where it resides in the intestines. This bacterium is a normal part of the gut flora, but certain strains can be pathogenic, leading to foodborne illnesses if ingested through contaminated food or water. The presence of E. coli in mammal intestines indicates a direct association with animal waste, which can contaminate food products, particularly undercooked meats and unpasteurized dairy products. While E. coli can be found in various environments, it is essential to understand its predominant habitat to recognize potential sources of contamination. Other options mention freshwater sources, fruits and vegetables, and soil environments, but these are not typical growth locations for E. coli. Fruits and vegetables can be carriers of the bacteria if contaminated, especially if irrigation occurs with contaminated water, yet their growth predominantly occurs in animal intestines.