Chapter 25 Objectives Continued
Metabolism

1. Identify the three "G's" and the hormone that controls each one.

2. Describe the signs and symptoms of diabetes.

3. Trace the pathway of lipid digestion.

4. Describe the functions of cholesterol, phospholipids and triglycerides.

5. Explain the transport of cholesterol through the lipoproteins manufactured by the liver.

6. Describe the factors involved in beta oxidation: lipids of metabolism and ketones.

7. Compare protein synthesis with deamination.

Take a Quiz - Chapter 25 continued

1. The role of insulin in carbohydrate metabolism is to:
    a. lower the glucose levels of the blood by causing the uptake of glucose in body cells
    b. glycogenesis
    c. conversion of glycogen to glucose
    d. two of the above

2. Identify the function that is correctly matched with the reaction below.
    a. glycolysis:  glucose to citric acid
    b. glycogenesis:  glucose to carbon dioxide and water
    c. glycogenolysis:   glycogen to glucose
    d. gluconeogenesis:  glycogen to acetyl coenzyme A

3. The signs of  Diabetes Mellitus include:
    a. glycosuria
    b. polydipsia
    c. ketosis
    d. all of the above

4. Identify the statement that is true of lipid digestion.
    a. the enzyme that breaks down lipids is bile
    b. lipids must be emulsified before they are broken down by lipase
    c. micelles are transported through the lacteals of the intestinal villi
    d. intestinal cells make cholesterol

5. The role of tryglycerides is the body is:
    a. a reserve molecule for ATP production
    b. a precursor of the steroid hormones
    c. the myelin sheath that insulates neurons
    d. all of the above are true

6. Phospholipids:
    a. are the bilayer structure of the cell membrane
    b. wrap around the axon of a neuron to insulate is
    c. are part of the clotting factor, thromboplastin
    d. all of the above are true

7. Identify from the following, the lipoproteins that is not related to your diet.
    a. chylomicrons
    b. very low density lipoproteins
    c. low density lipoproteins
    d. high density lipoproteins

8. Identify from the following, the lipoprotein that carries the largest quantity of cholesterol in the 
    blood and is considered "bad cholesterol".
    a. chylomicrons
    b. very low density lipoproteins
    c. low density lipoproteins
    d. high density lipoproteins

9. In the catabolism of triglycerides, in a process called beta oxidation, the following chemical of        
    energy metabolism is formed:
    a. cholesterol
    b. ketoacids
    c. acetyl coenzyme A
    d. pyruvic acid

10. In the process of deamination:
    a. the amino group is removed from an amino acid
    b. the radical is removed from an amino acid
    c. urea is made
    d. peptide bonds between amino acids are formed