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Test your basic knowledge |
Chemistry Certification
Start Test
Study First
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. The stimulant that causes localized sweating for the sweat test is...
specimen exposure to light
pilocarpine
viral hepatitis
ammonia
2. This hemoglobin has glucose-6-phosphate on the amino-terminal valine of the beta chain?
D
CK
A1c
lead
3. Most automated blood gas analyzers directly measure...
pH pCO2 pO2
whole blood can be used
fraction absorbed into systemic circulation
Tay-sachs
4. 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...
glucose oxidase
increased vasoconstriction
elevated lactic acid - elevated pyruvate
digoxin
5. 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...
amylase and lipase
obstructive jaundice
multiplied by 4
WITHOUT a disease with a negative test
6. The identification of Bence Jones protein is best accomplished by...
conjugated hyperbilirubinemia - hepatocellular obstruction
immunofixation
beta
creatine kinase
7. Lithium therapy is widely used in the treatment of...
monitoring the course of a known cancer
testing heparinized plasma
pH pCO2 pO2
manic-depression
8. The protein portion of an enzyme complex is called the...
hepatobiliary (obstruction?)
apoenzyme
alpha 2 beta
pituitary
9. A common cause of a falsely increased LD1 fraction of lactic dehydrogenase is...
conjugated hyperbilirubinemia - hepatocellular obstruction
hemolysis
multiplied by 4
1:5
10. The buffering capacity of blood is maintained by a reversible exchange process between bicarbonate and...
analyzed immediately
monitoring the course of a known cancer
benzoylecogine
chloride
11. How many grams of sodium chloride are needed to prepare 1 L of 0.9% normal saline?
9
tissue and serum levels need to reach equilibrium
is quantitated by the amount of light produced
fresh morning urine for delta-aminolevulinic acid
12. Serum levels that define hypoglycemia in preterm or low birth weight infants are...
pilocarpine
lower than in adults
cholesterol normal triglycerides elevated
standard
13. 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...
creatine kinase
cancel test
5
thyroxine binding globulin
14. Which blood gas electrode is composed of calomel and glass?
whole blood can be used
dirty electrodes
hepatobiliary (obstruction?)
CO2
15. The anticonvulsant used to control tonic-clonic (grand mal) seizures is...
phenytoin
occult blood
valine leucine isoleucine
3500
16. Scurvy is associated with deficiency of...
specificity
electric current
C
show a decrease in glycosylated hgb
17. When myocardial infarction occurs - the first enzyme to become elevated is...
faster than gamma
CK
HPLC analysis of porpobilinogen on 24hr urine
glucose tolerance test
18. The methodology based on the amount of energy absorbed by a subtance as a function of its concentration and using a specific source of the same material as the substance analyzed is...
enzyme induction
atomic absorption
breast cancer
parathyroid
19. A person suspected of having metabolic alkalosis would have these laboratory findings
CO2 and pH elevated
Tay-sachs
B12 deficiency
lower than in adults
20. The regulation of calcium and phosphorus metabolism is accomplished by which gland?
endogenous triglycerides
parathyroid
enzyme immunoassay
measure the total volume
21. The Porter-Silber method (phenylhydrazine in alcohol and sulfuric acid) involves which part of the steroid molecule?
boderline results test should be repeated
dihydroxyacetone side chain
thymolpthalein monophosphate
atomic absorption
22. A test request slip indicates that an acute porphyric attack is suspected clinically. Analysis should include...
porphyrin and porphobilinogen screen
didymium filter
porphobilinogen screen
TSH
23. The enzyme present in almost all tissues that may be separated by electrophoresis into five components is...
lead
LDH
enzyme immunoassay
coulometry
24. An automated method for measuring chloride that generates silver ions in the reaction is...
remove excess unbound iron
methadone
coulometry
2-log(T)
25. This enzymes catalyzes the conversion of starch to glucose and maltose
amylase and lipase
Calcium - phosphorus
GGT
amylase
26. 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
L/S ratio > 3.5
hyperthyroidism
electric current
fall in pH - rise in pCO2
27. The extent to which measurements agree with or approach the true value of the quantity being measured is referred to as...
200
band width
accuracy
hepatobiliary (obstruction?)
28. 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...
O2
the same as plasma glucose
carbohydrate hyperalimentation
high co2 and hco3
29. In respiratory acidosis - a compensatory mechanism is the increase in...
valine leucine isoleucine
fraction absorbed into systemic circulation
Solute moves half the distance of the solvent front
plasma bicarbonate
30. A serum sample for acid phosphatase determination is best prepared for room temperature storage by...
sample exposed to light
enzyme induction
lower than in adults
adding an acid stabilizer
31. The method of choice for diagnosis of a protracted attack of porphyria is...
HPLC analysis of porpobilinogen on 24hr urine
attaching them to protein molecules
testing heparinized plasma
TSH
32. Which percentage of total serum calcium is nondiffusible protein bound?
40-50
high co2 and hco3
ceruplasmin
LDH
33. The most important buffer pair in plasma is the...
inhibitor binds to enzyme at same site as substrate
D
5
bicarbonate carbonic acid
34. In monitoring glomerular function - this test has the highest sensitivity
specificity
NADH
analyzed immediately
creatinine clearance
35. Bioavailability of a drug refers to the...
bone
methyl alcohol
chemical ionization matrix
fraction absorbed into systemic circulation
36. This wavelengths is within the ultraviolet rang.
340
GGT
no decrease in serum growth hormone after 90 minutes
prostate
37. Gas chromatography with the nitrogen/phosphorus detector is the most commonly used technique for the analysis of...
2Na + glucose over 20 + BUN over 3
para-hydroxylphenyl...
cyclic antidepressants
LDL
38. This serum constituent is unstable if a blood specimen is left standing at room temperature for 8 hours before processing
peroxidase-like activity of hemoglobin
g/MW
elevated lactic acid - elevated pyruvate
glucose
39. 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...
Solute moves half the distance of the solvent front
changes in the fuel
CK-MB
pCO2
40. The general types of interference in atomic absorption spectrophotometry...
thyroxine binding globulin
carbs
MI
chemical ionization matrix
41. Most drugs and intracellular metabolites measured by radioimmunoassay have molecular weights between 200 and 1000 and can be made immunogenic by...
(testing of urine for) delta-am.. acid
urinary free cortisol
glucose
attaching them to protein molecules
42. A 2-year-old child with a decreased serum T4 is described as being somewhat dwarfed - stocky - overweight - and having coarse features. Of the following - the most informative additional laboratory test would be the serum...
40-50
lipase
TSH
methyl alcohol
43. This is a regulatory hormone.
correct for variations in light intensity
elevated lactic acid - elevated pyruvate
parathyroid hormone
carbohydrate hyperalimentation
44. These enzymes of heme biosynthesis are inhibited by lead
fall in pH - rise in pCO2
lithium
porphobilinogen synthetase
specificity
45. This enzyme substrates for prostatic acid phosphatase determination results in the highest specificity
urinary free cortisol
boderline results test should be repeated
thymolpthalein monophosphate
inhibitor binds to enzyme at same site as substrate
46. In the immunoinhibition phase of the CK-MB procedure...
sodium potassium chloride CO2
M subunit is inactivated
minimize the effects of interference
WITHOUT a disease with a negative test
47. Bromcresol purple at a pH of 5.2 is used in a colorimetric method to measure...
electric current
thymolpthalein monophosphate
2-log(T)
albumin
48. The formula for calculating absorbance given the percent transmittance (%T) of a solution
g/MW
C3 complement
2-log(T)
there is an absence of correlation
49. Blood was collected in a serum separator tube from a patient who had been fasting since midnight. The time of collection was 7:00 AM. The laboratory test that should be re-collected is...
BUN increased
sharp fibrinogen peak
cmpds based on molecular weight and size
triglycerides
50. This condition does decrease activity of glucuronyl transferase result in increased unconjugated bilirubin and kernicterus in neonates
atomic absorption
draw blood for glucose and discontinue test
crigler
phenytoin