Each is true of protective elements within the microflora,except one.Which is the exception?

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Prebiotics are nondigestible food ingredients that have beneficial effects on the host by selectively stimulating the growth or activity,or both,of beneficial colonic microorganisms.Stated succinctly,prebiotics are food for probiotics.Probiotics together with prebiotics that support their growth are called symbiotics because they work together to promote probiotic benefits more efficiently.Although probiotics can help to regulate bowel habits and relieve constipation,they are frequently used to treat diarrhea and to prevent irritable bowel syndrome.Constipation means having a bowel movement fewer than three times per week with hard,dry,difficult-to-pass stools.

Each Is True of Protective Elements Within the Microflora,except One