Question

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

• A. human body does not contain cellulose 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

Answer 1

Answer: (A)

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

The human body does not contain cellulose hence cellulose cannot be broken into D- glucose.

Humans don't have the necessary bacteria in their intestines that make the enzymes (cellulose), necessary to break down the $\beta$-1-4-glucose bonds.