2. Food Safety

Microbiology Basics — Quiz

Test your understanding of microbiology basics with 5 practice questions.

Practice Questions

Question 1

Which of the following microorganisms is characterized by its ability to produce mycotoxins, which are harmful secondary metabolites that can contaminate food?

Question 2

A food product has an $a_w$ (water activity) value of 0.85. Which of the following microorganisms would be most likely to thrive and cause spoilage in this product, assuming other conditions are favorable?

Question 3

Which of the following food preservation methods primarily works by reducing the water activity ($a_w$) of food to inhibit microbial growth, rather than by directly killing microorganisms?

Question 4

A food handler is preparing a salad with raw vegetables and cooked chicken. They use the same cutting board and knife for both ingredients without washing them in between. This practice primarily risks the transmission of microorganisms through which of the following mechanisms?

Question 5

Which of the following statements accurately describes the primary difference in how bacteria and viruses cause foodborne illness?