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






2. A serum sample for acid phosphatase determination is best prepared for room temperature storage by...






3. 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...






4. A fresh urine sample is received for "porphyrins" or "porphyria" without further information or specifications. Initial analysis should include...






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






6. This calcium procedure utilizes lanthanum chloride to emliminate iterfering substances






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






8. Clinical assays for tumor markers are the most important for...






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






10. Isoenzyme assays are preformed to improve...






11. A patient is admitted with biliary cirrhosis. If a serum protein electrophoresis is preformed - these globulin fractions will be most elevated?






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






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






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






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






16. A cardiac glycoside that is used in the treatment of congenital heart failure and arrhythmias by increasing the force and velocity of myocardial contraction is...






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






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






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






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






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






22. In an internal standard flame photometer - the internal standard is used to...






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






24. 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...






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






26. 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...






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






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






29. Detection of carriers of hereditary coproporphyria should include analysis of...






30. 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...






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






32. This steroid is an adrenal cortical hormone






33. A person suspected of having metabolic alkalosis would have these laboratory findings






34. The osmolal gap is defined as measured Osm/kg minus the calculated Osm/kg. The average osmolal gap is near...






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






36. The fast hemoglobin fraction is...






37. 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...






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






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






40. Blood samples were collected at the beginning of an exercise class and after 30 minutes of aerobic activity. This would be most consistent with the postexercise sample






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






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






43. A 24-hour urine specimen (total volume = 1136 mL) is submitted to the laboratory for quantitative urine protein. Calculate the amount of protein excreted per day - if the total protein is 52 mg/dL.






44. The T3 resin uptake test is a measure of...






45. Thiis serum protein fraction is most likely to be elevated in patients with nephrotic syndrome?






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






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






48. The anion gap is useful for quality control of laboratory results for...






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






50. In thin layer chromatography - the Rf value for a compound is given by the...