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






2. The concentration of serum carotene is affected MOST by...






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






4. If the correlation coefficient (r) of two variables is zero...






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






6. 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...






7. Testing for the diagnosis of lead poisoning should include...






8. A condition in which erythrocyte protoporphyrin is increased is...






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






10. Ion selective electrodes are called selective rather than specific because they actually measure the...






11. Amino acid associated with a sulfhydryl group






12. The method of choice for diagnosis of a protracted attack of porphyria is...






13. 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...






14. 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?






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






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






17. The measurement of light scattered by particles in the sample is the principle of...






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






19. If a drug has a half-life of 7 hours - how many doses given at 7-hour intervals does it usually take to achieve a steady state or plateau level?






20. The serum glucose concentration of a diabetic patient undergoing a 2-hour glucose tolerance test should return to the baseline (fasting level) after a minimum of...






21. A patient is admitted to the emergency room in a state of metabolic alkalosis.This would be consistent with this diagnosis?






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






23. A patient with myeloproliferative disorder has the following values: Hgb = 13 g/dL Hct = 38% WBC = 30 x 10^3/uL Platelets = 1000 x 10^3/uL Serum Na+ = 140 mEq/L Serum K+ = 7 mEq/L The serum K+ should be confirmed by...






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






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






26. In electrophoresis of serum proteins - arifacts at the application point are most frequently caused by...






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






28. 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...






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






30. Bile acid concentrations are useful to assess...






31. Assay of transketolase activity in blood is used to detect deficiency of...






32. Hydrogen ion concentration (pH) in blood is usually determined by means of these electrodes?






33. The following laboratory results were obtained: Serum Calcium: Increased - Urine Calcium: Increased - Serum Phosphate: Decreased - Urine Phosphate: Increased Serum Alkaline Phosphatase: Normal or Increased These results are most compatible with...






34. The fast hemoglobin fraction is...






35. 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...






36. This diseases results from a familial absence of high-density lioprotein






37. 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






38. The definitive diagnosis of primary adrenal insufficiency requires demonstration of...






39. 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...






40. This applies to cryoscopic osmometry






41. At blood pH 7.40 what is the ratio between bicarbonate and carbonic acid?






42. 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...






43. Gel filtration chromatography is used to separate...






44. Aminotransferase enzymes catalyze the...






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






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






47. TSH is produced by the...






48. A reciprocal relationship exists between...






49. The different water content of erythrocytes and plasma makes true glucose concentrations in whole blood a function of the...






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