New York City Food Protection Practice Test

Under optimal conditions, how quickly can bacteria double in population?

1. Every 10 to 15 minutes

2. Every 20 to 30 minutes

3. Every 30 to 40 minutes

4. Every 40 to 50 minutes

The correct answer is: Every 20 to 30 minutes

Bacteria have the ability to reproduce at an astonishing rate under optimal conditions, which typically include appropriate temperatures, moisture, nutrients, and minimal competition. Under these favorable conditions, many types of bacteria can double their population every 20 to 30 minutes. This rapid reproduction is crucial for understanding food safety, as it highlights how quickly foodborne pathogens can proliferate in the right environments, potentially leading to food spoilage and foodborne illnesses if not properly managed. While some bacteria may have longer or shorter doubling times, the 20 to 30 minute range is a general benchmark for many commonly encountered pathogens, making it essential information for food safety protocols and practices. Understanding this rapid growth is important for those who handle food, as it underscores the necessity of proper storage, cooking, and sanitization practices to minimize the risk of foodborne illnesses.