Which term describes bacteria that are harmless and can even be beneficial?

Non-pathogenic bacteria refer to types of bacteria that do not cause disease and can often play beneficial roles in various environments, including human health. These bacteria are part of the normal flora of the human body and contribute to processes such as digestion, nutrient absorption, and protecting the body against harmful pathogens. For instance, certain non-pathogenic bacteria can help maintain a healthy balance in the gut microbiome, which is crucial for overall health.

In contrast, pathogenic bacteria are those that are known to cause infections or diseases in humans and other organisms. Infectious bacteria is a more general term that also refers to bacteria capable of causing illness, while aerobic bacteria specifically require oxygen for growth and are not necessarily related to their pathogenicity. Thus, non-pathogenic bacteria represent a beneficial group that contributes positively to health and ecological balance.