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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 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...






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






3. The hemoglobin that is resistant to alkali (KOH) denaturation is...






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. Currently the most common method for specific identification and quantitation of serum barbiturates is...






6. 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...






7. The following data were obtained on amniotic fluid from a gestation of 36 weeks' duration by menstrual dates: L/S = 2 Phosphatidyl glycerol not present This can be concluded from these data?






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






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






10. An electrophoretic separation of lactate dehydrogenase isoenzymes that demonstrates an elevation in LD-l and LD-2 in a "flipped" pattern is consistent with...






11. Analysis of erythrocytes for uroporphyrinogen I synthetase detects...






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






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






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






15. 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...






16. A 68-year-old man arrives in the emergency room with a glucose level of 722 mg/dL and serum acetone of 4+ undiluted. An arterial blood gas from this patient is likely to indicate...






17. Ninety percent of the copper present in plasma is bound to...






18. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions






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






20. 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...






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






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






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






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






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






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






27. The formula for calculating serum osmolality that incorporates a correction for the water content of plasma is...






28. Aminotransferase enzymes catalyze the...






29. An increase in serum acetone is indicative of a defect in the metabolism of...






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






31. Calcium concentration in the serum is regulated by...






32. A patient with hemolytic anemia will...






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






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






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






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






37. The enzyme that exists chiefly in skeletal muscle - heart - and brain; is grossly elevated in active muscular dystrophy; and rises early in myocardial infarction is...






38. A reciprocal relationship exists between...






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






40. A fasting serum sample from an asymptomatic 43-year-old woman is examined visually chemically with the following results: Initial appearance of serum: Milky Appearance of serum after overnight refrigeration: Cream layer over turbid serum Triglyceri






41. Spectrophotometers isolate a narrow band pass by means of...






42. 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?






43. This enzymes catalyzes the conversion of starch to glucose and maltose






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






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






46. This applies to cryoscopic osmometry






47. Beriberi is associated with deficiency of...






48. 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...






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






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







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