Final answer:
It is true that bacteria used as probiotics can be added to foods to prevent infections and improve health. These beneficial prokaryotes are part of traditional food production like cheese and yogurt, and they also contribute to digestive and immune system health.
Step-by-step explanation:
It is true that some bacteria can be added to foods to prevent certain infections, utilizing an approach known as probiotics. Probiotics are beneficial prokaryotes that are introduced into the diet, often through foods such as yogurt, cheese, and sauerkraut. These helpful microorganisms can contribute to gut health and enhance the immune system, potentially reducing the incidence of foodborne diseases. Historically, the idea of employing prokaryotes to improve food products precedes the modern concept of biotechnology. Prokaryotes have long been involved in the production of cheese, wine, bread, beer, and yogurt—showcasing their integral role in food processing and health maintenance.