At the basal surface of epithelial cells are located: 1  The basement membrane, a thin non-cellular layer, intervenes between the epithelium and the connective tissue. 2  Hemidesmosomes are a variant of the intercellular desmosomes and anchor the cell to the basement membrane.t the basal surface of epithelial cells are located: 1  The basement membrane, a thin non-cellular layer, intervenes between the epithelium and the connective tissue. 2  Hemidesmosomes are a variant of the intercellular desmosomes and anchor the cell to the basement membrane.
The digestion of the disaccharide lactose to the monosaccharides glucose and galactose occurs very very slowly unless there is an enzyme to speed up the process. The enzyme that speeds up the digestion of lactose is called lactase. Lactase and most other enzymes are proteins.Each enzyme has an active site where a substrate molecule binds. For example, the substrate lactose binds to the active site of the enzyme lactase. Notice that the name of the enzyme lactase was created by adding the suffix â ase to part of the name of the substrate lactose.n enzyme speeds up a chemical reaction which converts a substrate molecule or molecules to a. product molecule or molecules. The products are released from the enzyme and the enzyme returns to its original state, so the enzyme is ready to act on another substrate molecule.
Digestion of carbs begins in the mouth with the enzyme amylase. Digestion of proteins begins in the stomach with hydrochloric acid. Digestion continues in the small intestine. â¦ The extremely acidic sludge triggers the pancreas to produce most of the digestive enzymes, which break down both carbs and proteins.igestion of proteins begins in the stomach with hydrochloric acid. Digestion continues in the small intestine. â¦ The extremely acidic sludge triggers the pancreas to produce most of the digestive enzymes, which break down both carbs and proteins.