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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 following data were obtained on amniotic fluid from a gestation of 36 weeks' duration by menstrual dates: L/S = 2 Phosphatidyl glycerol not present This can be concluded from these data?






2. A serum sample for acid phosphatase determination is best prepared for room temperature storage by...






3. The enzyme that exists chiefly in skeletal muscle - heart - and brain; is grossly elevated in active muscular dystrophy; and rises early in myocardial infarction is...






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






5. The most consistent analytical error involved in the routine determination of HDLcholesterol is caused by...






6. Before unconjugated bilirubin can react with Ehrlich's diazo reagent - this must be added






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






8. This is a glycolytic enzyme that catalyzes the cleavage of fructose-1 - 6-diphosphate to glyceraldehyde-3-phosphate and dihydroxyacetone phosphate






9. Sixty to seventy-five percent of the plasma cholesterol is transported by...






10. A 45-year-old woman complains of fatigue - heat intolerance - and hair loss. Serum thyroxine and 125I-T3 resin uptake are abnormally low. What test would confirm that this is a pituitary deficiency?






11. The methodology based on the amount of energy absorbed by a subtance as a function of its concentration and using a specific source of the same material as the substance analyzed is...






12. Stray light can be detected in a spectrophotometer by utilizing a...






13. A stool specimen that appears black and tarry should be tested for the presence of...






14. Cocaine is metabolized to...






15. The nanometer is a measurement of...






16. 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...






17. The formula for coefficient of variation?






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






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






20. Detection of carriers of hereditary coproporphyria should include analysis of...






21. The osmolality of a urine or serum specimen is measured by a change in the...






22. Certain enzymes are activated to metabolize drugs as a result of another drug action. This is referred to as...






23. A serum potassium is 19.5 mg/100 mL. This value is equal to how many mEq/L (MW of K = 39)?






24. Most automated blood gas analyzers directly measure...






25. A thick white turbid specimen was received in the laboratory labeled as pericardial fluid. A microscopic examination was performed - and the differential included 90% PMNs. The fluid is...






26. A 45-year-old woman complains of fatigue - heat intolerance - and hair loss. Serum thyroxine and 125I-T3 resin uptake are abnormally low. What test would confirm that this is a pituitary deficiency?






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






28. The anion gap is useful for quality control of laboratory results for...






29. Currently the most common method for specific identification and quantitation of serum barbiturates is...






30. Amino acid associated with a sulfhydryl group






31. The buffering capacity of blood is maintained by a reversible exchange process between bicarbonate and...






32. Serum concentrations of vitamin B12 are elevated in...






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






34. Alkaline phosphatase Slight increase - Aminotransferase Marked increase - Aspartate aminotransferase Marked increase - Alanine gamma-glutamyl transferase Slight increase






35. Scurvy is associated with deficiency of...






36. In using ion-exchange chromatographicbmethods - falsely increased levels of Hgb A1c will be demonstrated in presence of...






37. In automated methods utilizing a bichromatic analyzer - dual wavelengths are employed to...






38. The following laboratory results were obtained: Serum Calcium: Increased - Urine Calcium: Increased - Serum Phosphate: Decreased - Urine Phosphate: Increased Serum Alkaline Phosphatase: Normal or Increased These results are most compatible with...






39. When separating serum proteins by cellulose acetate electrophoresis using veronal buffer at pH 8.6 - beta globulin migrates...






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






41. Upon completion of a run of cholesterol tests - the technician recognizes that the controls are not within the two standard deviations confidence range. What is the appropriate course of action






42. An Rf value of 0.5 in thin-layer chromatography means...






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






44. Following overnight fasting - hypoglycemia in adults is defined as a glucose of...






45. 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...






46. Characteristic of the Bence Jones protein that is used to distinguish it from other urinary proteins is its solubility...






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






48. Pregnant women with symptoms of thirst - frequent urination - or unexplained weight loss should have this test performed?






49. The reason carbon monoxide is so toxic is because it...






50. Which percentage of total serum calcium is nondiffusible protein bound?