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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 stimulant that causes localized sweating for the sweat test is...






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






3. This electrolyte is the chief plasma cation whose main function is maintaining osmotic pressure






4. Turbidity in serum suggests elevation of...






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






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






7. High levels of which lipoprotein class are associated with decreased risk of accelerated atherosclerosis?






8. When myocardial infarction occurs - the first enzyme to become elevated is...






9. An automated CK assay gives a reading that is above the limits of linearity. A dilution of the serum sample is made by adding 1 mL of serum to 9 mL of water. The instrument now rew 350 U/L. The correct report on the undiluted serum should be...






10. A stool specimen that appears black and tarry should be tested for the presence of...






11. An automated method for measuring chloride that generates silver ions in the reaction is...






12. Aminotransferase enzymes catalyze the...






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






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






15. Zinc protoporphyrin or free erythrocyte protoporphyrin measurements are useful to assess blood concentrations of...






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






17. A pH of 7.0 represents a H+ concentration of...






18. The following data were obtained from a cellulose acetate protein electrophoresis scan: Albumin area 75 units Gamma globulin area 30 units Total area 180 units Total protein 6.5 g/dL The gamma globulin content in g/dL is...






19. This elevates carboxyhemoglobin?






20. 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...






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






22. While performing a serum lithium determination on a flame photometer with cesium as the internal standard - the technologist noticed that there was a flickering flame. The most probable cause of this problem is...






23. The buffer pH most effective at allowing amphoteric proteins to migrate toward the cathode in an electrophoretic system would be...






24. The electrophoretic pattern of a plasma sample compared with a serum sample shows a...






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






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






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






28. 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...






29. The enzyme present in almost all tissues that may be separated by electrophoresis into five components is...






30. 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






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






32. 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






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






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






35. These enzymes of heme biosynthesis are inhibited by lead






36. 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...






37. 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...






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






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






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






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






42. 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...






43. 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...






44. 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...






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






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






47. A 45-year-old woman has a fasting serum glucose concentration of 95 mg/dL and a 2-hour postprandial glucose concentration of 105 mg/dL. The statement that best describes this patient's fasting serum glucose concentration is...






48. 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?






49. In spectrophotometric determination - this is the formula for calculating the absorbance of a solution






50. Rickets is associated with deficiency of...