FaqKids.com

="answers
Q:
Why can't humans eat grass?
A:

Cows can eat grass, so why can’t we? Well, plant cells contain something called cellulose. Chemically, it’s almost identical to a lot of the carbohydrate molcules (like glucose and fructose) in the food we eat. But cellulose has one bond that’s different, and we can’t break that bond to get the energy out of the cellulose the way we get it from other molecules. So we could eat grass, but we wouldn’t be able to digest it to get the energy we need. Cows and other mammals can eat grass because they have special bacteria living in their stomachs called symbiont bacteria. These symbionts can break the bond in cellulose for the animal its living in. That way cows can get energy from grass. We don’t have any of these symbiont bacteria, so we can’t digest the cellulose in grass.

related questions

Share This Site

Word of the Day

beforetime:
beforetime: formerly.

Born on this day

December 18, 2014

1916 - Betty Grable
1938 - Chas Chandler
1943 - Keith Richards
1947 - Steven Spielberg
1963 - Brad Pitt
1963 - Robson Green
1966 - Les Ferdinand
1966 - Keifer Sutherland
1980 - Christina Aguilera
www.Bridal-Shower-Games.com |Baby Shower Games | www.TwitterBackgrounds.org