If the optimal ph range of most enzymes is between 6 and 8, is there possibly some advantage to having certain enzymes, such as pepsin, active in the low ph of the stomach?

Answer:

If the optimal pH range of most enzymes is between 6 and 8, there will be possibly some advantages to having certain enzymes, such as pepsin, active in the low pH of the stomach

Yes it has certain advantages.

Explanation:

Every enzyme has a particular optimal pH range in which they can function properly. The enzymes that has low PH is considered as acidic and the enzymes with high pH level is regarded as basic. In humans the stomach has enzymes with low pH levels. The enzyme pepsin of stomach works at ph level 2 and in this level, the carboxylic group of amino acids get protonated and helps in catalysing the reaction of breaking the chemical bonds in the body.