Answer:
By producing vitamins or breaking down molecules.
Explanation:
- Producing vitamins that humans cannot produce by themselves. Lactobacillus, Bifidobacterium, and members of the gut microbiota are examples of probiotics that synthesize vitamin K and others like biotin, pantothenic acid, riboflavin, and thiamine.
- Another way is by breaking down with enzymes molecules that cannot be digested by humans, for example, fiber, starches, and sugars.
I hope you find this information useful and interesting! Good luck!
