Test your basic knowledge |

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. This applies to cryoscopic osmometry






2. 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...






3. Clinical assays for tumor markers are the most important for...






4. Acidosis and alkalosis are best defined as fluctuations in blood pH and CO2 content due to changes in...






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






6. Lithium therapy is widely used in the treatment of...






7. A patient has the following results: Patient Values : Reference Values: Serum iron 250 ug/dL 60-150 ug/dL TIBC 350 ug/dL 300-35O ug/dL The best conclusion is that this patient has...






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






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






10. 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






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






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






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






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






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






16. The normal concentration of proteins in cerebrospinal fluid - relative to serum protein - is...






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






18. The Porter-Silber method (phenylhydrazine in alcohol and sulfuric acid) involves which part of the steroid molecule?






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






20. A sweat chloride result of 55 mEq/L and a sweat sodium of 52 mEq/L were obtained ona patient who has a history of respiratory problems. The bestc interpretation of these results is...






21. 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?






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






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






24. In developing the reference for a new EIA for CEA - the range for the normal population was broader than that published by the vendor. Controls are acceptable with a narrow coefficient of variation. This may be explained by...






25. Testing for the diagnosis of lead poisoning should include...






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






27. Unless blood gas measurements are made immediately after sampling - in vitro glycolysis of the blood causes a...






28. In the fasting state - the arterial and capillary blood glucose concentration varies from the venous glucose concentration by approximately how many mg/dL?






29. This method employs a highly specific antibody to thyroxine






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






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






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






33. 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?






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






35. In electrophoresis of proteins - when the sample is placed in an electric field connected to a buffer of pH 8.6 - all of the proteins...






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






37. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions






38. 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?






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






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






41. The biuret reaction for the analysis of serum protein depends on the number...






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






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






44. The Henderson-Hasselbalch equation






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






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






47. Quantitation of NA+ and K+ by ion-selective electrode is more rapid than flame photometry because...






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






49. Rickets is associated with deficiency of...






50. 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?