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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 concentration of serum carotene is affected MOST by...






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






3. The major fraction of organic iodine in the circulation is in the form of...






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






5. A 68-year-old man arrives in the emergency room with a glucose level of 722 mg/dL and serum acetone of 4+ undiluted. An arterial blood gas from this patient is likely to indicate...






6. Coulometry is used to measure...






7. 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?






8. This hemoglobin has glucose-6-phosphate on the amino-terminal valine of the beta chain?






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






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






11. This enzymes catalyzes the conversion of starch to glucose and maltose






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






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






14. 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?






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






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






17. What substance gives feces its normal color?






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






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






20. Technical problems encountered during the collection of an amniotic fluid specimen caused doubt as to whether the specimen was amniotic in origin. This procedure would establish that the fluid is amniotic in origin






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






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






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






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






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






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






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






28. The selectivity of an ion-selective electrode is determined by the...






29. At blood pH 7.40 what is the ratio between bicarbonate and carbonic acid?






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






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






32. This serum constituent is unstable if a blood specimen is left standing at room temperature for 8 hours before processing






33. Aminotransferase enzymes catalyze the...






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






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






36. This is a characteristic shared by lactate dehydrogenase - malate dehydrogenase - isocitrate dehydrogenase - and hydroxybutyrate dehydrogenase?






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






38. The regulation of calcium and phosphorus metabolism is accomplished by which gland?






39. In amniotic fluid - the procedure used to detect Rh isosensitization is...






40. Serum haptoglobin...






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






42. 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?






43. The nanometer is a measurement of...






44. In the assay of lactate dehydrogenase - this product is actually measured






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






46. At a pH of 8.6 the gamma globulins move toward the cathode - despite the fact that they are negatively charged. What is this phenomenon called?






47. This method offers the greatest sensitivity for HBsAg testing






48. 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






49. The principle of the occult blood test depends on the...






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







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