Question

Why can't humans digest cellulose​

Answer 1

Answer:

Humans are unable to digest cellulose because the appropriate enzymes to breakdown the beta acetal linkages are lacking. (More on enzyme digestion in a later chapter.) Undigestible cellulose is the fiber which aids in the smooth working of the intestinal tract. ... No vertebrate can digest cellulose directly.

Answer 2

Answer:

because human digestive system do not have power to digest cellulose like animals..

and humana do not eat cellulose rich food