Exam 40: Digestion and Absorption

Which of the following is not a barrier to the absorption of glucose?

An enzyme that is a hydrolase breaks water down into hydrogen and oxygen.

Match each of the digestive juices and enzymes with its corresponding description. -Substance that emulsifies fat

Chief cells produce pepsin.

The formation of feces is the primary function of the rectum.

The sodium cotransport, which carries both sodium ions and glucose molecules, is an active transport mechanism.

The primary function of the digestive system is to bring essential nutrients into the internal environment so that they are available to the cells of the body.

Enzymes are pH sensitive because differences in the hydrogen ion concentration can affect the shape of the protein molecule.

Gastrin, an enzyme that stimulates gastric secretions, is made by G-cells.

The blood surrounding the pancreas would have a slightly higher pH than blood in other parts of the body.

Match each structure with its function, description, or the enzyme it produces. -Organ in which pepsinogen is made

Which monosaccharide is found in all three of the most common disaccharides?

Match each structure with its function, description, or the enzyme it produces. -Location of lipase production that is ineffective because the ingested lipids are still too large

Lipase can be called a hydrolase.

The end product of lipase digestion is:

Why can it be said that absorption is the reason for digestion?

Most enzymes catalyze a chemical reaction in both directions. Explain what this means.

Chief cells and zymogenic cells are the same structures. They function to produce digestive enzymes in the stomach.

The action of bile on fat would be an example of mechanical digestion.

Digestion uses the following methods in which order to accomplish its function?