How often can a bacterium reproduce under ideal conditions?

The correct choice indicates that under ideal conditions, a bacterium can reproduce approximately every 15-20 minutes. This rapid reproduction rate is primarily due to the simplicity of bacterial cell division, which occurs through a process called binary fission. During ideal circumstances—such as optimal temperature, pH, nutrient availability, and minimal competition—the conditions are favorable for bacteria to grow and multiply quickly.

In the context of food safety, understanding the reproduction rate of bacteria is crucial. It highlights the importance of controlling the time food is left in the temperature danger zone, typically between 41°F and 135°F (5°C and 57°C), where bacteria can multiply rapidly, increasing the risk of foodborne illnesses. Keeping food stored at safe temperatures can help inhibit this rapid growth.

Additionally, while bacteria can reproduce as quickly as every 5-10 minutes under certain optimal conditions, the more typical expectation is around the 15-20 minute mark, providing a realistic timeframe that food safety protocols can address. The other options reflect longer time periods for reproduction, which do not accurately represent the rapid growth potential of bacteria in ideal environments.