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






2. 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...






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






4. Serum anion gap is increased in patients with...






5. The function of the major lipid components of the very low density lipoproteins (VLDL) is to transport...






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






7. The protein portion of an enzyme complex is called the...






8. 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...






9. TSH is produced by the...






10. In electrophoretic analysis - buffers...






11. In the sweat test - the sweating stimulant is introduced to the skin by application of...






12. A breakdown product of hemoglobin is...






13. A serum sample was assayed for bilirubin at 10 AM and the result was 12 mg/dL. The same sample was retested at 3 PM. The result now is 8 mg/dL. The most likely explanation for this discrepancy is...






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






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






16. Thiis serum protein fraction is most likely to be elevated in patients with nephrotic syndrome?






17. 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?






18. Blood samples were collected at the beginning of an exercise class and after 30 minutes of aerobic activity. This would be most consistent with the postexercise sample






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






20. This chemical determination may be of help in establishing the presence of seminal fluid






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






22. In thin layer chromatography - the Rf value for a compound is given by the...






23. Ion selective electrodes are called selective rather than specific because they actually measure the...






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






26. Blood received in the laboratory for blood gas analysis must meet these requirements






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






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






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






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






31. A potentiometric electrode that measures an analyte that passes through a selectively premeable membrane and rapidly enters into an equilibrium with an electrolyte solution is...






32. The TRH (thyrotropin-releasing hormone) stimulation test is useful in assessing...






33. The following laboratory results were obtained on arterial blood: Sodium 136 mEq/L pH 7.32 Potassium 4.4 mEq/L PCO2 79 mm Hg Chloride 92 mEq/L Bicarbonate 40 mEq/L These results are most compatible with...






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






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






36. 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...






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






38. Turbidity in serum suggests elevation of...






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






40. This calcium procedure utilizes lanthanum chloride to emliminate iterfering substances






41. The greatest activities of serum AST and ALT are seen in...






42. The first step to be taken when attempting to repair a piece of electronic equipment is...






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






44. 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...






45. 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...






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






47. In monitoring glomerular function - this test has the highest sensitivity






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






49. A carbonate salt used to control manic-depressive disorders is...






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