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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. Upon development of a thin layer chromatogram for the drug analysis - all drug spots (including the standards) had migrated with the solvent front. The most probable cause for this would be...






2. 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






3. The preparation of a patient for standard tolerance testing should include...






4. An acid cleaning solution for glassware consists of...






5. In familial hypercholesterolemia - the hallmark finding is an elevation of...






6. On immunoassays using enzyme-labeled antibodies or antigens: ___________ can be carried out with a spectrophotometer






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






8. A 21-year-old man with nausea - vomiting - and jaundice has the following laboratory findings: Total serum bilirubin level: 8.5 mg/dL (normal - 0-1.0) Conjugated serum bilirubin level: 6.1 mg/dL (normal - 0-0.5) Urine urobilinogen: Increased Fecal u






9. Which blood gas electrode is composed of calomel and glass?






10. In competitive inhibition of an enzyme reaction the...






11. The measurement of light scattered by particles in the sample is the principle of...






12. A reciprocal relationship exists between...






13. A course of instruction is being planned to teach laboratory employees to correct simple malfunctions in selected laboratory instruments. In writing the objectives for this course - this would be most appropriate?






14. Amniotic fluid submitted for a lecithin/sphingomyelin (US) ratio has been left in a brown container since the night before. You would expect...






15. In monitoring glomerular function - this test has the highest sensitivity






16. The hemoglobin that is resistant to alkali (KOH) denaturation is...






17. 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...






18. In an internal standard flame photometer - the internal standard is used to...






19. A blood gas sample was sent to the lab on ice - and a bubble was present in the syringe. The blood had been exposed to room air for at least 30 minutes. The following change in blood gases occurred...






20. 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...






21. An HPLC operator notes that the column pressure is too high - is rising too rapidly - and the recorder output is not producing normal peaks. The most probable cause of the problem is...






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






23. Scurvy is associated with deficiency of...






24. The protein portion of an enzyme complex is called the...






25. The following results were obtained in a creatinine clearance evaluation: Urine concentration 84 mg/dL Urine volume 1440 mL/24 hr Serum concentration 1.4 mg/dL Body surface area 1.60 m2 (average = 1.73 m2) The creatinine cle~trance in mL/min is...






26. Enzymes used in the diagnosis of acute pancreatitis?






27. Bromcresol purple at a pH of 5.2 is used in a colorimetric method to measure...






28. A patient is admitted with biliary cirrhosis. If a serum protein electrophoresis is preformed - these globulin fractions will be most elevated?






29. In a normal individual - injection of thyrotropin-releasing hormone (TRH) causes an increase in blood concentrations of this hormone






30. Respiratory acidosis is described as a(n): ______ increase in CO2 decrease in pH






31. The function of the major lipid components of the very low density lipoproteins (VLDL) is to transport...






32. The buffer pH most effective at allowing amphoteric proteins to migrate toward the cathode in an electrophoretic system would be...






33. The presence of this isoenzymes indicates acute myocardial damage






34. This would be an example of a glucose-specific colorimetric method






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






36. In the liver - bilirubin is converted to...






37. Aminotransferase enzymes catalyze the...






38. The urea nitrogen concentration of a serum sample was measured as 15 mg/dL (atomic weights: carbon = 12 - oxygen = 16 - nitrogen = 14 - hydrogen = 1). The urea concentration of the same sample - in mg/dL - is...






39. A fresh urine sample is received for "porphyrins" or "porphyria" without further information or specifications. Initial analysis should include...






40. In electrophoresis of serum proteins - arifacts at the application point are most frequently caused by...






41. The TRH (thyrotropin-releasing hormone) stimulation test is useful in assessing...






42. 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...






43. This wavelengths is within the ultraviolet rang.






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






45. The nanometer is a measurement of...






46. The ability of a procedure to measure only the component(s) it claims to measure is called...






47. This chemical determination may be of help in establishing the presence of seminal fluid






48. A common cause of respiratory alkalosis is...






49. The unit of measure for a standard solution is...






50. Ion selective electrodes are called selective rather than specific because they actually measure the...