Sorry i cannot answer because its too big for me.
A human cheek cell is thin, flat and has a large nucleus that contains the DNA. Its plasma membrane helps the cell to maintain suitable temperature while giving it its shape. Since it is selectively permeable, it only allows certain molecules into and out of the cell.
Stomach
In the stomach, enzymes break down food such as carbohydrates, protein and fats, so that nutrients can be absorbed farther down the GI tract, according to the National Digestive Disease Information Clearinghouse. The stomach mixes and churns foods to slowly release into the small intestine. Liquids empty the quickest, in one to two hours, and solid food takes about two to three hours to transit out of the stomach.