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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. Fluctuation of the needle on a coulometric type titrator is most probably due to...






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






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






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






5. Blood was collected in a serum separator tube from a patient who had been fasting since midnight. The time of collection was 7:00 AM. The laboratory test that should be re-collected is...






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






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






8. 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?






9. A 9-month-old boy from Israel has gradually lost the ability to sit up and develops seizures. He has an increased amount of a phospholipid called GM2-ganglioside in his neurons - and he lacks the enzyme hexosaminidase A in his leukocytes. These findi






10. This condition does decrease activity of glucuronyl transferase result in increased unconjugated bilirubin and kernicterus in neonates






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






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






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






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






15. The fast hemoglobin fraction is...






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






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






18. To ensure an accurate ammonia level result - the specimen should be...






19. The methodology based on the amount of energy absorbed by a subtance as a function of its concentration and using a specific source of the same material as the substance analyzed is...






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






21. Upon development of a thin layer chromatogram for the drug analysis - all drug spots (including the standards) had migrated with the solvent front. The most probable cause for this would be...






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






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






24. The most widely used support medium for electrophoretic separation of lipoproteins is...






25. 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?






26. Oligoclonal bands are present on electrophoresis of concentrated CSF and also on concurrently tested serum of the same patient. The proper interpretation is...






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






28. In electrophoretic analysis - buffers...






29. 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...






30. Given the following results: Alkaline phosphatase Marked increase Aminotransferase Slight increase Aspartate aminotransferase Slight increase Alanine gamma-glutamyl transferase Marked increase This is most consistent with...






31. This would be an example of a glucose-specific colorimetric method






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






33. 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...






34. 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...






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






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






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






38. Magnesium carbonate is added in an iron binding capacity determination in order to...






39. Most drugs and intracellular metabolites measured by radioimmunoassay have molecular weights between 200 and 1000 and can be made immunogenic by...






40. Amino acid associated with a sulfhydryl group






41. The primary function of serum albumin in the peripheral blood is to...






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






43. This method offers the greatest sensitivity for HBsAg testing






44. 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






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






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






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






48. A patient has signs and symptoms suggestive of acromegaly. The diagnosis would be confirmed if the patient had...






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






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