Which can be used to prevent initial entry of bacteria into the body?

b brown mice / white sand dunes

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?