Zoology - Digestion and Absorption Question with Solution | TestHub

In Humans, starch is digested in the buccopharyngeal cavity. Cellulose is not digested in the humans because cellulose contains$\mathrm{\beta }-1,$4-linkage and vertebrates do not possess any enzyme capable of hydrolyzing$\mathrm{\beta }-1,$4-linkages. Protein is digested in the stomach and fat in the small intestine. Thus, in the given options, fat and cellulose reach totally undigested in the stomach of humans.