Food that we consume is composed of very complex molecules. During the digestive
ID: 62883 • Letter: F
Question
Food that we consume is composed of very complex molecules. During the digestive process these compounds are broken down into smaller and smaller subunits in preparation for use by the body as building blocks needed for the many components of the human body. The chicken and rice that were eaten by Matt and Maria contained ingredients composed of fats, proteins, carbohydrates, and other components such as minerals, water and vitamins. ** From the point that the specific metabolites are absorbed from the GI tract, trace the path of the resulting metabolites to the following locations in the body for incorporation into the body structure: 1.Metabolites of protein for use in the Gastrocnemius muscle for muscle maintenance. 2. Metabolites of the carbohydrates for energy to contract the cardiac muscle cells. 3. Metabolites of fat to incorporate into the myelin sheaths of the Schwann cells of the Trigeminal nerve that innervates the Masseter muscle. 4. Water for incorporation into the synovial fluid of the hip joint. 5. Iron for incorporation into red blood cells in the bone marrow of the sternum.
(Note:1-5 are not answer choices)
Explanation / Answer
The correct choices are as follows:
Carbohydrates act as chief energy source of muscle and brain function. All most all membranes are made up of fatty acids. The sternum has red bone marrow, so iron enter into sternum used for synthesis of RBC. All these are in their monomeric forms and they can enter into any organ by traveling through blood circulation.
Here, the proteins are absorbed in the form of amino acids, hence cannot use in the Gastrocnemius muscle for muscle maintenance. The synovial fluid is complex mixture of carbohydrates and water, however the whole absorbed water do not directly enter into synovial fluid of the hip joint.
Thus, the correct options are (2), (3) and (5).