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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 the immunoinhibition phase of the CK-MB procedure...






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






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






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






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






6. Nephelometers measure light...






7. 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...






8. A patient in her 33rd week of pregnancy is hospitalized with toxemia. Her doctor would like to deliver the baby early because the toxemia is becoming more severe. The baby's best chance of delivery without respiratory distress due to lung immaturity






9. 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?






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






11. The osmolality of a urine or serum specimen is measured by a change in the...






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






13. Bioavailability of a drug refers to the...






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






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






16. A 9-month-old boy from Israel has gradually lost the ability to sit up and develops seizures. He has an increased amount of a phospholipid called GM2-ganglioside in his neurons - and he lacks the enzyme hexosaminidase A in his leukocytes. These findi






17. This 2-hour postprandial glucose values demonstrates unequivocal hyperglycemia diagnostic for diabetes mellitus






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






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






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






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






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






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






24. 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...






25. Most drugs and intracellular metabolites measured by radioimmunoassay have molecular weights between 200 and 1000 and can be made immunogenic by...






26. The following data were obtained from a cellulose acetate protein electrophoresis scan: Albumin area 75 units Gamma globulin area 30 units Total area 180 units Total protein 6.5 g/dL The gamma globulin content in g/dL is...






27. 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...






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






29. An electrode has a silver/silver chloride anode and a platinum wire cathode. It is suspended in KCl solution and separated from the blood to be analyzed by a selectively permeable membrane. Such an electrode is used to measure...






30. In monitoring glomerular function - this test has the highest sensitivity






31. 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?






32. These enzymes of heme biosynthesis are inhibited by lead






33. 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...






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






35. This hemoglobin has glucose-6-phosphate on the amino-terminal valine of the beta chain?






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






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






38. 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






39. The fast hemoglobin fraction is...






40. A carbonate salt used to control manic-depressive disorders is...






41. 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...






42. A spectrophotometer is being considered for purchase by a small laboratory. This specification reflects the spectral purity of the instrument






43. A patient with type I insulin-dependent diabetes mellitus has the following results: Fasting blood glucose: 150 mg/dL (70-110 rng/dL) Hemoglobin A1c: 25% (6.0%-19.5%) Fructosamine: 3.0 mmol/L ( 2.0-5.3 mmol/L)






44. A breakdown product of hemoglobin is...






45. When taken by a euthyroid individual - oral contraceptives containing estrogens will have this effects on the thyroid function studies






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






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






48. In the Jaffe reaction - creatine reacts with...






49. Magnesium carbonate is added in an iron binding capacity determination in order to...






50. The most common type of congenital adrenal hyperplasia associated with increased plasma concentrations of 17 a-hydroxyprogesterone and increased urinary excretion of pregnanetriol is...