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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. Analysis of erythrocytes for uroporphyrinogen I synthetase detects...






2. 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?






3. In performing a spinal fluid protein determination - the specimen is diluted 1 part spinal fluid to 3 parts saline to obtain a result low enough to measure. To calculate the protein concentration the result must be...






4. The glucose level in normal peritoneal fluid should be...






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






6. In the Jaffe reaction - creatine reacts with...






7. Phenobarbital is a metabolite of...






8. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are both elevated in this disease






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






10. The Henderson-Hasselbalch equation






11. A common cause of a falsely increased LD1 fraction of lactic dehydrogenase is...






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






13. The direction in which albumin migrates (ie - toward anode or cathode) during electrophoretic separation of serum proteins - at pH 8.6 - is determined by...






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






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






16. 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...






17. This disease is associated with the greatest elevation of lactate dehydrogenase isoenzyme 1?






18. Beriberi is associated with deficiency of...






19. 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...






20. A person suspected of having metabolic alkalosis would have these laboratory findings






21. A chemiluminescent EIA...






22. 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...






23. One means of checking a spectrophotometer wavelength calibration in the visible range is by using a...






24. A patient had the following serum results: Na+ 140 mEq/L K+ 4.0 mEq/L Glucose 95 mg/dL BUN 10 mg/dL Which osmolality is consistent with these results?






25. The relative migration rate of proteins on cellulose acetate is based on...






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






27. 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...






28. 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






29. A fasting serum sample from an asymptomatic 43-year-old woman is examined visually chemically with the following results: Initial appearance of serum: Milky Appearance of serum after overnight refrigeration: Cream layer over turbid serum Triglyceri






30. As part of a hyperlipidemia screening program - the following results were obtained on a 25 year old woman 6 hours after eating:Triglycerides = 260 mg/dLCholesterol = 120 mg/dL - This is the BEST interpretation of these results?






31. The different water content of erythrocytes and plasma makes true glucose concentrations in whole blood a function of the...






32. Scurvy is associated with deficiency of...






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






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






35. A spectrophotometer is being considered for purchase by a small laboratory. This specification reflects the spectral purity of the instrument






36. In respiratory acidosis - a compensatory mechanism is the increase in...






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






38. In a double-beam photometer - the additional beam is used to...






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






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






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






42. 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...






43. A technician is asked by the supervisor to prepare a standard solution from the stock standard. What is the glassware of choice for this solution?






44. A potassium level of 6.8 mEq/L is obtained. Before reporting the results - the first step the technologist should take is to...






45. A patient with malabsorption receives 25 g of d-xylose orally; during the subsequent 5-hour period - the urine excretion of d-xylose is less than 3 g. This would indicate...






46. Regan isoenzyme has the same properties as alkaline phosphatase that originates in the...






47. A patient with glomerulonephritis would present the following serum results...






48. A blood sample was received from the emergency room with a request for narcotic analysis. The request slip indicated that the patient (a known heroin addict) responded to naloxone administration. The serum was negative for morphine by EIA. What other






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






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