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Chemistry Certification

Subject : certifications
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The biuret reaction for the analysis of serum protein depends on the number...






2. When the exact concentration of the solute of a solution is known and is used to evaluate the concentration of an unknown solution - the known solution is...






3. The most widely used support medium for electrophoretic separation of lipoproteins is...






4. The identification of Bence Jones protein is best accomplished by...






5. Most chemical methods for determining total protein utilize this reaction?






6. Measurement of the serum acid phosphatase is used to detect neoplastic disease of the...






7. The nanometer is a measurement of...






8. The biologically most active - naturally occuring androgen is...






9. Oligoclonal bands are present on electrophoresis of concentrated CSF and also on concurrently tested serum of the same patient. The proper interpretation is...






10. An electrode has a silver/silver chloride anode and a platinum wire cathode. It is suspended in KCl solution and separated from the blood to be analyzed by a selectively permeable membrane. Such an electrode is used to measure...






11. Diagnostic specificity is defined as the percentage of individuals...






12. This serum protein migrates with the beta-globulins on cellulose acetate at pH 8.6...






13. This calcium procedure utilizes lanthanum chloride to emliminate iterfering substances






14. A low concentrarion of serum phosphorus is commonly found in...






15. The following data were obtained from a cellulose acetate protein electrophoresis scan: Albumin area 75 units Gamma globulin area 30 units Total area 180 units Total protein 6.5 g/dL The gamma globulin content in g/dL is...






16. This lipid results would be expected to be falsely elevated on a serum specimen from a nonfasting patient






17. This condition does decrease activity of glucuronyl transferase result in increased unconjugated bilirubin and kernicterus in neonates






18. The method of choice for diagnosis of a protracted attack of porphyria is...






19. If the correlation coefficient (r) of two variables is zero...






20. Aminotransferase enzymes catalyze the...






21. The following blood gas results were obtained: pH : 7.18 PO2: 86 mm Hg PCO2: 60 mm Hg O2 saturation: 92% HCO3-: 21 mEq/L TCO2: 23 mEq/L Base excess: -8.0 mEq/L The patient's results are compatible with...






22. This is a regulatory hormone.






23. An increase in serum acetone is indicative of a defect in the metabolism of...






24. The electrophoretic pattern of a plasma sample compared with a serum sample shows a...






25. The enzyme present in almost all tissues that may be separated by electrophoresis into five components is...






26. If a drug has a half-life of 7 hours - how many doses given at 7-hour intervals does it usually take to achieve a steady state or plateau level?






27. The general types of interference in atomic absorption spectrophotometry...






28. The serum glucose concentration of a diabetic patient undergoing a 2-hour glucose tolerance test should return to the baseline (fasting level) after a minimum of...






29. Bioavailability of a drug refers to the...






30. A pH of 7.0 represents a H+ concentration of...






31. A serum sample was assayed for bilirubin at 10 AM and the result was 12 mg/dL. The same sample was retested at 3 PM. The result now is 8 mg/dL. The most likely explanation for this discrepancy is...






32. About 90% of phenytoin is excreted in the urine as...






33. Most drugs and intracellular metabolites measured by radioimmunoassay have molecular weights between 200 and 1000 and can be made immunogenic by...






34. One international unit of enzyme activity is the amount of enzyme that - under specified reaction conditions of substrate concentration - pH - and temperature - causes utilization of substrate at the rate of...






35. In the atomic absorption method for calcium - lanthanum is used...






36. A breakdown product of hemoglobin is...






37. In the immunoinhibition phase of the CK-MB procedure...






38. Blood was collected in a serum separator tube from a patient who had been fasting since midnight. The time of collection was 7:00 AM. The laboratory test that should be re-collected is...






39. An automated CK assay gives a reading that is above the limits of linearity. A dilution of the serum sample is made by adding 1 mL of serum to 9 mL of water. The instrument now rew 350 U/L. The correct report on the undiluted serum should be...






40. A 45-year-old woman has a fasting serum glucose concentration of 95 mg/dL and a 2-hour postprandial glucose concentration of 105 mg/dL. The statement that best describes this patient's fasting serum glucose concentration is...






41. Specimens for blood gas determination should be drawn into a syringe containing...






42. The main reason for suboptimal drug levels in therapeutic drug monitoring is...






43. When taken by a euthyroid individual - oral contraceptives containing estrogens will have this effects on the thyroid function studies






44. An electrophoretic separation of lactate dehydrogenase isoenzymes that demonstrates an elevation in LD-l and LD-2 in a "flipped" pattern is consistent with...






45. Magnesium carbonate is added in an iron binding capacity determination in order to...






46. The osmolal gap is defined as measured Osm/kg minus the calculated Osm/kg. The average osmolal gap is near...






47. What specimen preparation is commonly used to perform the alkaline phosphatase isoenzyme determination?






48. The definitive diagnosis of primary adrenal insufficiency requires demonstration of...






49. Blood samples were collected at the beginning of an exercise class and after 30 minutes of aerobic activity. This would be most consistent with the postexercise sample






50. The formula for calculating absorbance given the percent transmittance (%T) of a solution







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