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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. An Rf value of 0.5 in thin-layer chromatography means...






2. Characteristic of the Bence Jones protein that is used to distinguish it from other urinary proteins is its solubility...






3. A one MOLAL solution is equivalent to...






4. 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?






5. A blood sample was received from the emergency room with a request for narcotic analysis. The request slip indicated that the patient (a known heroin addict) responded to naloxone administration. The serum was negative for morphine by EIA. What other






6. Blood specimens for digoxin assays should be obtained between 8 hours or more after drug administration because...






7. The most important buffer pair in plasma is the...






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






9. These enzymes of heme biosynthesis are inhibited by lead






10. The glucose level in normal peritoneal fluid should be...






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






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






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






14. The principle of the occult blood test depends on the...






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






16. A test request slip indicates that an acute porphyric attack is suspected clinically. Analysis should include...






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






18. When the exact concentration of the solute of a solution is known and is used to evaluate the concentration of an unknown solution - the known solution is...






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






20. 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...






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






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






23. This applies to cryoscopic osmometry






24. 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...






25. Coulometry is used to measure...






26. Specimens for blood gas determination should be drawn into a syringe containing...






27. Before unconjugated bilirubin can react with Ehrlich's diazo reagent - this must be added






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






29. A common cause of a falsely increased LD1 fraction of lactic dehydrogenase is...






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






31. A serum potassium is 19.5 mg/100 mL. This value is equal to how many mEq/L (MW of K = 39)?






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






33. A patient with malabsorption receives 25 g of d-xylose orally; during the subsequent 5-hour period - the urine excretion of d-xylose is less than 3 g. This would indicate...






34. This steroid is an adrenal cortical hormone






35. Patients with Cushing's syndrome exhibit...






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






37. The test for adrenal cortical hyperfunction that has the greatest diagnostic sensitivity is measurement of...






38. A common cause of respiratory alkalosis is...






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






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






41. In a normal individual - injection of thyrotropin-releasing hormone (TRH) causes an increase in blood concentrations of this hormone






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






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






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






45. A reciprocal relationship exists between...






46. About 90% of phenytoin is excreted in the urine as...






47. Cocaine is metabolized to...






48. The following blood gas results were obtained: pH : 7.18 PO2: 86 mm Hg PCO2: 60 mm Hg O2 saturation: 92% HCO3-: 21 mEq/L TCO2: 23 mEq/L Base excess: -8.0 mEq/L The patient's results are compatible with...






49. 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...






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