rock
no. humans lack an enzyme to digest wood
Yes, humans can digest goldfish just like any other fish but I wouldn't recommend it.
Humans can't digest cellulose.
humans use stomach acid to digest the food
to digest food
No don't be silly!
Fiber
they cant
No. Tissues are made of paper which is made from cellulose which humans cannot digest.
Humans can't digest roughage (eg. cellulose) because of the beta linkages that hold the glucose molecules together. Humans don't have enzymes that can break these linkages.
Humans can digest starch because they produce an enzyme called amylase that can break down starch into simpler sugars. However, humans lack the enzyme needed to break down cellulose, which is a complex carbohydrate found in plant cell walls. This is why humans cannot digest cellulose.
yeah i think so but it takes you 7 days to digest your food and 7 years to digest gum. so yeah we digest everthing