Which one of the following pairs of food components in humnas reaches the stomach totally undiagested?

Options

A. Proten and starch
B. Starch and fat
C. Fat and cellulose
D. Starch and cellulose

Answer

C

Explanation

In humans, starch is digested in buccopharynageal cavity. Cellulose is not digested in the humans because cellulose contains `beta-1`, 4-linkage and vertebrates themselves donot posses any enzymes capable of hydrolysing `beta-`, 4-linkages. Protein is digested in stomach and fat in small intesstine. Thus, in the green otions, fat and cellulose reach totally undigested in the stomach of humans.