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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. Malic dehydrogenase is added to the aspartate aminotransaminase (AST) reaction to catalyze the conversion of...






2. Patients with Cushing's syndrome exhibit...






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






4. 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






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






6. This enzyme substrates for prostatic acid phosphatase determination results in the highest specificity






7. 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...






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






9. The most common type of congenital adrenal hyperplasia associated with increased plasma concentrations of 17 a-hydroxyprogesterone and increased urinary excretion of pregnanetriol is...






10. 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?






11. A condition in which erythrocyte protoporphyrin is increased is...






12. A psychiatric patient was experiencing sever depression - but responded to treatment with amitriptyline with no apparent side effects. A blood sample was sent to the laboratory for therapeutic monitoring. Which drug level would be MOST reflective of






13. 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...






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






15. 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...






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






17. Spectrophotometers isolate a narrow band pass by means of...






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






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






20. 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...






21. A patient with type I insulin-dependent diabetes mellitus has the following results: Fasting blood glucose: 150 mg/dL (70-110 rng/dL) Hemoglobin A1c: 25% (6.0%-19.5%) Fructosamine: 3.0 mmol/L ( 2.0-5.3 mmol/L)






22. Gel filtration chromatography is used to separate...






23. A breakdown product of hemoglobin is...






24. This wavelengths is within the ultraviolet rang.






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






26. Lasting serum phosphate concentration is controlled primarily by the...






27. A 2-year-old child with a decreased serum T4 is described as being somewhat dwarfed - stocky - overweight - and having coarse features. Of the following - the most informative additional laboratory test would be the serum...






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






29. Total iron-binding capacity measures the serum iron transporting capacity of...






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






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






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






33. Given the following values:100;120;150;140;130;What is the mean?






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






35. Isoenzyme assays are preformed to improve...






36. The most widely employed screening technique for drug abuse is...






37. A cardiac glycoside that is used in the treatment of congenital heart failure and arrhythmias by increasing the force and velocity of myocardial contraction is...






38. The anticonvulsant used to control tonic-clonic (grand mal) seizures is...






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






40. This elevates carboxyhemoglobin?






41. The formula for calculating serum osmolality that incorporates a correction for the water content of plasma is...






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






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






44. The most heat labile fraction of alkaline phosphatase is obtained from...






45. A patient in her 33rd week of pregnancy is hospitalized with toxemia. Her doctor would like to deliver the baby early because the toxemia is becoming more severe. The baby's best chance of delivery without respiratory distress due to lung immaturity






46. A new method is being evaluated. A recovery experiment is performed with the following results: 0.9 mL serum sample + 0.1 mL H20 = 89 mEq/L 0.9 mL serum sample + 0.1 mL analyte std. @ 800 mEq/L = 161 mEq/L The percent recovery of the added analyt






47. Gas chromatography with the nitrogen/phosphorus detector is the most commonly used technique for the analysis of...






48. The chemical composition of HDL- cholesterol corresponds to...






49. The following five sodium control values (mEq/L) were obtained:140 - 135 - 138 - 140 - 142Calculate the coefficient of variation.






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







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