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






2. 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






3. This steroid is an adrenal cortical hormone






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






5. This serum constituent is unstable if a blood specimen is left standing at room temperature for 8 hours before processing






6. Amino acid associated with a sulfhydryl group






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






8. The chemical composition of HDL- cholesterol corresponds to...






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






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






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






12. This wavelengths is within the ultraviolet rang.






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






14. 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...






15. This applies to cryoscopic osmometry






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






17. The Porter-Silber method (phenylhydrazine in alcohol and sulfuric acid) involves which part of the steroid molecule?






18. Aminotransferase enzymes catalyze the...






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






20. In the fasting state - the arterial and capillary blood glucose concentration varies from the venous glucose concentration by approximately how many mg/dL?






21. A patient with glomerulonephritis would present the following serum results...






22. Nephelometers measure light...






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






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






25. Upon completion of a run of cholesterol tests - the technician recognizes that the controls are not within the two standard deviations confidence range. What is the appropriate course of action






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






27. Beriberi is associated with deficiency of...






28. The extent to which measurements agree with or approach the true value of the quantity being measured is referred to as...






29. 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?






30. A potentiometric electrode that measures an analyte that passes through a selectively premeable membrane and rapidly enters into an equilibrium with an electrolyte solution is...






31. Sixty to seventy-five percent of the plasma cholesterol is transported by...






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






33. After a difficult venipuncture requiring prolonged application of the tourniquet - the serum K+ was found to be 6.8 mEq/L. The best course of action is to...






34. Upon completion of a run of cholesterol tests - the technician recognizes that the controls are not within the two standard deviations confidence range. What is the appropriate course of action?






35. Pregnant women with symptoms of thirst - frequent urination - or unexplained weight loss should have this test performed?






36. 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?






37. 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...






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






39. This serum protein migrates with the beta-globulins on cellulose acetate at pH 8.6...






40. 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?






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






42. 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?






43. 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?






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






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






46. 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?






47. A common cause of a falsely increased LD1 fraction of lactic dehydrogenase is...






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






49. The major fraction of organic iodine in the circulation is in the form of...






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