Which of the following is an example of a microbiological hazard?

• A. Bacteria
• B. Pesticides
• C. Salt
• D. Glass

Answer: (A)

Microbiological hazards come from microorganisms that can contaminate food and cause illness. Bacteria are living microorganisms that can multiply in foods under favorable conditions and may produce toxins or cause infection when eaten, making them a classic microbiological hazard. The other options involve non-microbial risks: pesticides are chemical hazards that can contaminate food through residues; salt is a chemical/mineral that, while common in foods, isn’t a microbiological hazard; glass is a physical hazard that can injure or contaminate food if broken into it. In practice, controlling microbiological hazards focuses on preventing contamination and growth, and ensuring proper cooking, chilling, hygiene, and avoidance of cross-contamination.