Cellulose is a polysaccharide, not a disaccharide
The cell walls of plants can actually have two layers. The primary structure is a polysaccharide known as cellulose (which is actually not digestible when consumed by humans). Later in the plant's life a second cell wall can be developed using a molecule known as lignin which is quite rigid even after the plant has died.
Yes, lactase can definitely break down cellulose. In fact, when the lactase works to break down the cellulose, it breaks the cellulose down into two different monomers.
basic unit of cellulose is glucose
Yes, cellulose forms the cell walls of all plants
fiber
The human body cannot digest cellulose, a complex carbohydrate found in plant cell walls. While we can break down some forms of fiber, cellulose remains undigested as our digestive enzymes cannot break its bonds.
Most carbohydrates, yes. Though there are a few carbs, notably cellulose (fiber), that pass through the alimentary canal unchanged and undigested.
Feaces
ummmm.....nature's little gift of love....poop.
Undigested cellulose is fibre. Fibre gives your gut muscles something to push against and prevents them from atrophying.
Starch
Defecation or elimination is the process of removing undigested food (feces) from the body.
No you cannot. Cotton balls contain mostly cellulose fiber. And the digestive system of humans does not have the ability to break down the cellulose into more simple carbohydrates that can be absorbed into the body. So if you did try and eat one, it would only come out the other end, undigested.
Undigested food leaves the Paramecium through a structure called the anal pore, which serves as the organism's anus. The anal pore is located at the posterior end of the Paramecium and allows undigested food particles to be expelled from the cell.
Bile
tomato seeds and its thin upper layer