chemistry

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Chem14 quiz bank Chemistry quiz bank ch 14 lipids lipoproteins 1. The most likely cause for serum/plasma to appear “milky” is the presence of a. VLDL b. HDL c. Chylomicrons* d. LDL 2. The lipoprotein that contains the greatest amount of protein is called a. VLDL b. HDL* c. LDL d. chylomicrons 3. Which of the following methods for lipoprotein electrophoresis depends on a charge AND molecular size? a. Paper b. Polyacrylamide gel* c. Cellulose acetate d. agarose 4. A patient is admitted to the hospital with intesnse chest pains. The patients primary care physician requests the emergency department doctor to order several tests, including a lipid profile with cholesterol fractionation. Given the patient’s results provided below, what would be this patients LDL cholesterol status? a. Optimal b. Borderline c. High* d. Desirable 5. Which of the following results are the most consistent with high risk for coronary heart disease? a. 35mg/dL HDL cholesterol and 200mg/dL total cholesterol b. 20mg/dL HDL cholesterol and 250mg/dL total cholesterol* c. 50mg/dL HDL cholesterol and 190mg/dL total cholesterol d. 55mg/dL HDL cholesterol and 180mg/dL total cholesterol e. 60mg/dL HDL cholesterol and 170mg/dL total cholesterol 6. Which lipoprotein is the major carrier of cholesterol to peripheral tissue? a. HDL b. VLDL c. Chylomicrons d. LDL* 7. In the colorimetric determination of cholesterol using the enzyme cholesterol oxidase, the agent that oxidizes the colorless organic compound 4-aminoantipyrine to a PINK® complex is a. Cholest-4-ene-3-one b. Phenol c. NAD

Chem14 quiz bank d. Hydrogen peroxide* 8. Which of the following statements concerning chylomicrons is FALSE a. This lipoprotein is produced in the intestinal mucosa b. It remains at the origin (point of application) during lipoprotein electrophoresis c. The major lipid transported by this protein is cholesterol* d. The primary function is to carry dietary (exogenous) lipid to the liver 9. Several enzymatic triglycerides methods measure the production or consumption of a. Diacetyl lutidine b. Fatty acids c. Glycerol d. NADH* 10. T or F pre beta (VLDL) lipoproteins migrate further toward the anode on polyacrylamide gel that they do on cellulose acetate or agarose FALSE 11. As a part of a lipoprotein phenotyping, it is necessary to preform total cholesterol and triglyceride determinations, as well as lipoprotein electrophoresis. The test results obtained from such studies were:  Triglyceride, 340mg/dL (reference rage < 150mg/dL)  Total cholesterol, 180mg/dL (reference range, <200mg/dL) a. Type V hyperlipoprotinemia b. Type III hyperlipoprotinemia c. Type I hyperlipoprotinemia d. Type IV hyperlipoprotinemia* e. Type II hyperlipoprotinemia 12. A patient is admitted to the hospital with intense chest pains. The patient’s primary care physician requests the emergency department doctor to order several tests, including a lipid profile with cholesterol fractionation. Given the patient’s results provided below, what would be the LDL cholesterol for this patient? a. 300mg/dL b. 160mg/dL c. 200mg/dL d. 240mg/dL* 13. What is the presumed defect in most cases of familial type IIa hyperlipoprotinemia? a. Deficiency of lipoprotein lipase b. Deficiency of cholesterol esterase c. Deficiency of hydroxymethylglutaryl (HMG)-CoA reductase d. Defective receptors for LDL* e. Defective esterifying enzymes LCAT and ACAT

Chem14 quiz bank 14. Hyperchylomicronemia (type I) in childhood has been associated with which of the following? {Multiple answers} a. A deficiency of apolipoprotein CII* b. A deficiency of lipoprotein lipase* c. A deficiency of LCAT d. A deficiency of apolipoprotein AI 15. T or F increased levels of apolipoprotein A-I are associated with increased risk of coronary artery disease FALSE

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