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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 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






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






3. Turbidity in serum suggests elevation of...






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






5. Serum from a patient with metastatic carcinoma of the prostate was separated from the clot and stored at room temperature. The following results were obtained: Patient Reference Range Calcium: 10.8 mg/dL 8.8-10.3 mg/dL LD:420 U/L 50-150 U/L Acid phos






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






7. A serum potassium is 19.5 mg/100 mL. This value is equal to how many mEq/L (MW of K = 39)?






8. Fluctuation of the needle on a coulometric type titrator is most probably due to...






9. 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...






10. 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






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






12. A 21-year-old man with nausea - vomiting - and jaundice has the following laboratory findings: Total serum bilirubin level: 8.5 mg/dL (normal - 0-1.0) Conjugated serum bilirubin level: 6.1 mg/dL (normal - 0-0.5) Urine urobilinogen: Increased Fecal u






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






14. The most heat labile fraction of alkaline phosphatase is obtained from...






15. Serum concentrations of vitamin B12 are elevated in...






16. This applies to cryoscopic osmometry






17. Maple syrup urine disease is characterized by an increase in this urinary amino acids






18. This lipid results would be expected to be falsely elevated on a serum specimen from a nonfasting patient






19. In automated methods utilizing a bichromatic analyzer - dual wavelengths are employed to...






20. Isoenzyme assays are preformed to improve...






21. The unit of measure for a standard solution is...






22. A critically ill patient becomes comatose. The physician believes the coma is due to hepatic failure. The assay most helpful in this diagnosis is...






23. The formation of estriol in a pregnant woman is dependent on...






24. The primary function of serum albumin in the peripheral blood is to...






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






26. In using ion-exchange chromatographicbmethods - falsely increased levels of Hgb A1c will be demonstrated in presence of...






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






28. The formula for calculating absorbance given the percent transmittance (%T) of a solution






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






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






31. A blood gas sample was sent to the lab on ice - and a bubble was present in the syringe. The blood had been exposed to room air for at least 30 minutes. The following change in blood gases occurred...






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






33. Most most likely to be ordered in addition to serum calcium to determine the cause of tetany?






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






35. A true statement about high performance liquid chromatography (HPLC) is that it...






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






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






38. Alkaline phosphatase Slight increase - Aminotransferase Marked increase - Aspartate aminotransferase Marked increase - Alanine gamma-glutamyl transferase Slight increase






39. The first step to be taken when attempting to repair a piece of electronic equipment is...






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






41. Enzymes used in the diagnosis of acute pancreatitis?






42. A new method is being evaluated. A recovery experiment is performed with the following results: 0.9 mL serum sample + 0.1 mL H20 = 89 mEq/L 0.9 mL serum sample + 0.1 mL analyte std. @ 800 mEq/L = 161 mEq/L The percent recovery of the added analyt






43. What substance gives feces its normal color?






44. This steroid is an adrenal cortical hormone






45. The following blood gas results were obtained: pH : 7.18 PO2: 86 mm Hg PCO2: 60 mm Hg O2 saturation: 92% HCO3-: 21 mEq/L TCO2: 23 mEq/L Base excess: -8.0 mEq/L The patient's results are compatible with...






46. Nephelometers measure light...






47. This method employs a highly specific antibody to thyroxine






48. 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?






49. These enzymes of heme biosynthesis are inhibited by lead






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







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