Test your basic knowledge |

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. A 45-year-old woman complains of fatigue - heat intolerance - and hair loss. Serum thyroxine and 125I-T3 resin uptake are abnormally low. What test would confirm that this is a pituitary deficiency?






2. The stimulant that causes localized sweating for the sweat test is...






3. Oligoclonal bands are present on electrophoresis of concentrated CSF and also on concurrently tested serum of the same patient. The proper interpretation is...






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






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






6. When separating serum proteins by cellulose acetate electrophoresis using veronal buffer at pH 8.6 - beta globulin migrates...






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






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






9. The function of the major lipid components of the very low density lipoproteins (VLDL) is to transport...






10. Most automated blood gas analyzers directly measure...






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






12. Zinc protoporphyrin or free erythrocyte protoporphyrin measurements are useful to assess blood concentrations of...






13. The following results were obtained in a creatinine clearance evaluation: Urine concentration 84 mg/dL Urine volume 1440 mL/24 hr Serum concentration 1.4 mg/dL Body surface area 1.60 m2 (average = 1.73 m2) The creatinine cle~trance in mL/min is...






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






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






16. The formula for calculating the amount of moles of a chemical?






17. Phenobarbital is a metabolite of...






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






19. This chemical determination may be of help in establishing the presence of seminal fluid






20. As part of a hyperlipidemia screening program - the following results were obtained on a 25 year old woman 6 hours after eating:Triglycerides = 260 mg/dLCholesterol = 120 mg/dL - This is the BEST interpretation of these results?






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






22. 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...






23. The ability of a procedure to measure only the component(s) it claims to measure is called...






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






25. While performing a serum lithium determination on a flame photometer with cesium as the internal standard - the technologist noticed that there was a flickering flame. The most probable cause of this problem is...






26. The following five sodium control values (mEq/L) were obtained:140 - 135 - 138 - 140 - 142Calculate the coefficient of variation.






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






28. 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?






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






30. Enzymes used in the diagnosis of acute pancreatitis?






31. 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...






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






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






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






35. In a double-beam photometer - the additional beam is used to...






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






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






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






39. A potassium level of 6.8 mEq/L is obtained. Before reporting the results - the first step the technologist should take is to...






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






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






42. The general types of interference in atomic absorption spectrophotometry...






43. 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...






44. Rickets is associated with deficiency of...






45. In respiratory acidosis - a compensatory mechanism is the increase in...






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






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






48. 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.






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






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