Why will a decrease in ph of the stomach affect protein digestion? . a) decrease in ph of the stomach will distort the structure of peptides in food, which affects the action of the enzyme pepsin.. b) decrease in ph of the stomach will distort the active site of the enzyme pepsin, which affects it's action.. c) decrease in ph of the stomach will distort the active site of the enzyme lipase, which affects protein digestion.. @agent0smith @♪chibiterasu you guys know possibly?

The answer would be B-  Decrease in pH of the stomach will distort the active site of the enzyme pepsin, which affects it's action.. 

Pepsin is needed in the digestion of protein, a decrease in pH of the stomach will distort the active site of the enzyme pepsin, which affects it's action.Because pepsin is a tertiary protein that possesses many bonds, a change in pH will see these bonds broken, and in so doing change the shape of the enzyme as well as the active site shape and as such affects the overall function of the molecule.B is the answer  Decrease in pH of the stomach will distort the active site of the enzyme pepsin, which affects it's action..