Yes.. There are protein and they can be denature
enzymes
yes it can be broken down by the villi in the stomach walls
Enzymes.
enzymes i think!!(:
by enzymes
All compounds can be broken down without enzymes. Most just take a REALLY long time. Enzymes speed up the process.
When enzymes in saliva mix with starch, first the carbohydrates are broken down into dextrin. Then dextrin is broken down into maltose and glucose
startch is broken down by enzymes
Starch is broken down in enzymes
Proteins are broken down by protease enzymes (e.g. pepsin) into polypeptides. Polypeptides are broken down by peptidase enzymes into amino acids.
It is either used again (many enzymes are used multiple times before broken down) or is broken down.
Lipids are broken down by the enzyme Lipase.