Cellulose present in plants and as a food for cattle but not for human beings because

Question

Cellulose present in plants and as a food for cattle but not for human beings because (A) human body does not contain cellulase hence cellulose cannot be broken into D-glucose (B) human saliva cannot break down plant cellulose in small pieces (C) bile juice present in cattle helps them to digest cellulose (D) human beings have a smaller stomach than cattle.

Tardigrade Admin · Accepted Answer

The enzyme cellulase present in the stomach of catde breaks cellulose into D-glucose and is easily digested. But, it is not present in the human body hence cellulose cannot be broken down into D-glucose in human body and cannot act as food for human beings.

Q. Cellulose present in plants and as a food for cattle but not for human beings because

human body does not contain cellulase hence cellulose cannot be broken into $D$ -glucose

human saliva cannot break down plant cellulose in small pieces

bile juice present in cattle helps them to digest cellulose

human beings have a smaller stomach than cattle.

The enzyme cellulase present in the stomach of catde breaks cellulose into $D$ -glucose and is easily digested. But, it is not present in the human body hence cellulose cannot be broken down into $D$ -glucose in human body and cannot act as food for human beings.