Describe the type of symbiotic relationship between E.coli and the host's intestinal tract. ch14
E. coli is a mutualist—it contributes to good health by creating folic acid, an importantnutrient necessary for production of red blood cells, and vitamin K, which is required fornormal blood clotting. E. coli is also one of the “good” microbiota in the intestine thatprevents overgrowth of pathogens. However, E. coli is an opportunistic pathogen when itspreads to other parts of the body.