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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. In electrophoretic analysis - buffers...






2. A 25-year-old man became nauseated and vomited 90 minutes after receiving a standard 75-g carbohydrate dose for an oral glucose tolerance test. The best course of action is...






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






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






5. Scurvy is associated with deficiency of...






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






7. The formation of estriol in a pregnant woman is dependent on...






8. The first step in analyzing a 24-hour urine specimen for quantitative urine protein is...






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






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






11. An emphysema patient suffering from fluid accumulation in the alveolar spaves is likely to be in what metabolic state?






12. The expected blood gas results for a patient in chronic renal failure would match the pattern of...






13. Following overnight fasting - hypoglycemia in adults is defined as a glucose of...






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






15. The formula for calculating the amount of moles of a chemical?






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






17. 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...






18. Four children are admitted with malaise - anorexia - and abdominal pain. Further evaluations reveal mild anemia - erythrocyte basophilic stippling - and profound pica habits. Poisoning by which heavy metal is most likely responsible?






19. This elevates carboxyhemoglobin?






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






21. 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...






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






23. This wavelengths is within the ultraviolet rang.






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






25. Gas chromatography with the nitrogen/phosphorus detector is the most commonly used technique for the analysis of...






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






27. 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?






28. A low concentrarion of serum phosphorus is commonly found in...






29. Serum levels that define hypoglycemia in preterm or low birth weight infants are...






30. How many grams of sodium chloride are needed to prepare 1 L of 0.9% normal saline?






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






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






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






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






35. 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...






36. 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...






37. After a difficult venipuncture requiring prolonged application of the tourniquet - the serum K+ was found to be 6.8 mEq/L. The best course of action is to...






38. A patient with hemolytic anemia will...






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






40. What specimen preparation is commonly used to perform the alkaline phosphatase isoenzyme determination?






41. 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






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






43. 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






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






45. 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...






46. The identification of Bence Jones protein is best accomplished by...






47. Estrogen and progesterone receptor assays are useful in assessing prognosis in...?






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. On immunoassays using enzyme-labeled antibodies or antigens: ___________ can be carried out with a spectrophotometer






50. 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...






Can you answer 50 questions in 15 minutes?



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