Question

help

Answer 1

In a healthy person, the feces leaving the body contain very few undigested molecules from food. One major exception is cellulose, which leaves the body virtually intact. From this we can conclude that the human digestive system does not
Answer
contain enzymes that can digest proteins such as cellulose.
digest cellulose because it does not contain any energy.
have a large intestine long enough to break down cellulose.
produce enzymes that can break down cellulose.

Answer 2

The common theme among all of these choices is that we can't break down cellulose...so you just have to eliminate the ones that are factually incorrect.

What type of molecule is cellulose?

Answer 3

um i dunno

Answer 4

but is this the answer: digest cellulose because it does not contain any energy.

Answer 5

I don't think so - sorry! Cellulose is a polysaccharide...it's a chain of many many sugars. So you can eliminate the first choice.

Since it's a chain of many many sugars, it DOES store a lot of energy. So that choice is also gone.

Answer 6

kma230 is right that there is energy in cellulose and it's not a protein but a polysaccharide. I don't think the digestive system produces enzymes that break down cellulose so that's probably true. I think horses (and humans to a small extent) can break down cellulose thanks to bacteria in their guts but mostly it goes undigested as dietary fibre.

Answer 7

so which is it?

Answer 8

Have a wee think - the site isn't really designed to answer your questions without you learning things.

Answer 9

I got it its this one based on what u said:
produce enzymes that can break down cellulose.

Answer 10

Nice job.

Answer 11

thx