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Chemistry Certification
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Subject
:
certifications
Instructions:
Answer 50 questions in 15 minutes.
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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. Total iron-binding capacity measures the serum iron transporting capacity of...
agarose
BUN increased
transferrin
show a decrease in glycosylated hgb
2. An electrophoretic separation of lactate dehydrogenase isoenzymes that demonstrates an elevation in LD-l and LD-2 in a "flipped" pattern is consistent with...
chylomicrons
MI
LDL
Temperature is a function of the number of particles in solution
3. The general types of interference in atomic absorption spectrophotometry...
prostate
chemical ionization matrix
alpha 2 beta
specificity
4. A patient has signs and symptoms suggestive of acromegaly. The diagnosis would be confirmed if the patient had...
lipase
urinary free cortisol
no decrease in serum growth hormone after 90 minutes
lower than in adults
5. Isoenzyme assays are preformed to improve...
1.9
nondiagnostic for MS
specificity
9
6. The following bilirubin results are obtained on a patient: Day 1: 4.3 mg/dL Day 4: 2.2 mg/dL Day 2: 4.6 mg/dL Day 5: 4.4 mg/dL Day 3: 4.5 mg/dL Day 6: 4.5 mg/dL - Given that the controls were within range each day - what is a probable explanation for
respiratory acidosis
albumin
LDH
specimen exposure to light
7. A true statement about high performance liquid chromatography (HPLC) is that it...
intestinal malabsorption
F
can be used for absorbtion - partition - ion exchange - and gel permeation chromatography
B12 deficiency
8. Assay of transketolase activity in blood is used to detect deficiency of...
parathyroid hormone
thymolpthalein monophosphate
thiamine
carbohydrate hyperalimentation
9. This applies to cryoscopic osmometry
cyclic antidepressants
CK-MB
Temperature is a function of the number of particles in solution
specificity
10. The preparation of a patient for standard tolerance testing should include...
mg/ml
high carbohydrate diet for 3 days
thiamine
obstructive jaundice
11. A common cause of respiratory alkalosis is...
scattered at a right angle
hyperventilation
1 micromole per minute
ionization of carboxyl groups (yielding a net negative charge)
12. The relative migration rate of proteins on cellulose acetate is based on...
prisms and grating
binding capacity of thyroxine-binding globulin
ionic charge
200
13. A spectrophotometer is being considered for purchase by a small laboratory. This specification reflects the spectral purity of the instrument
nephelometry
lactic acidosis
no decrease in serum growth hormone after 90 minutes
band width
14. One international unit of enzyme activity is the amount of enzyme that - under specified reaction conditions of substrate concentration - pH - and temperature - causes utilization of substrate at the rate of...
one micromole/minute
sharp cutoff filter
atomic absorption
@ 100
15. The function of the major lipid components of the very low density lipoproteins (VLDL) is to transport...
endogenous triglycerides
measurement of absorbance at 450
patient noncompliance
multiplied by 4
16. An Rf value of 0.5 in thin-layer chromatography means...
Solute moves half the distance of the solvent front
aldolase
ceruplasmin
100nmol
17. The principle of the occult blood test depends on the...
peroxidase-like activity of hemoglobin
endosmosis
no ice clots bubbles
chemical ionization matrix
18. An emphysema patient suffering from fluid accumulation in the alveolar spaves is likely to be in what metabolic state?
respiratory ACIDOSIS
viral hepatitis
attaching them to protein molecules
100 nmol
19. A pH of 7.0 represents a H+ concentration of...
freezing point
<1%
100 nmol
albumin
20. 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?
sharp fibrinogen peak
bicarbonate carbonic acid
run a new set of controls
endosmosis
21. This enzymes catalyzes the conversion of starch to glucose and maltose
amylase
hemolysis
CO2
TSH
22. A reciprocal relationship exists between...
lower than in adults
pituitary
Calcium - phosphorus
fetal and placenta function
23. 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?
thiamine
run a new set of controls
5
tissue and serum levels need to reach equilibrium
24. Bioavailability of a drug refers to the...
exposure to CO
fraction absorbed into systemic circulation
atomic absorption
Calcium - phosphorus
25. Blood received in the laboratory for blood gas analysis must meet these requirements
enzyme immunoassay
CK-MB
no ice clots bubbles
2Na + glucose over 20 + BUN over 3
26. Pregnant women with symptoms of thirst - frequent urination - or unexplained weight loss should have this test performed?
check serum for hemolysis
glucose tolerance test
be able to detect 9/10 simple instrument malfunctions
catalyze redox reactions
27. The fast hemoglobin fraction is...
ionic charge
270
patient noncompliance
A1
28. 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...
21-hydroxylase deficiency
nondiagnostic for MS
iron hemochromatosis
GGT
29. The direction in which albumin migrates (ie - toward anode or cathode) during electrophoretic separation of serum proteins - at pH 8.6 - is determined by...
D
ionization of carboxyl groups (yielding a net negative charge)
mg/ml
A1
30. Quantitation of NA+ and K+ by ion-selective electrode is more rapid than flame photometry because...
cancel test
whole blood can be used
CO2 and pH elevated
thiamine
31. The definitive diagnosis of primary adrenal insufficiency requires demonstration of...
bicarbonate carbonic acid
L/S ratio > 3.5
591
impaired response to ACTH stimulation
32. In competitive inhibition of an enzyme reaction the...
BUN increased
bilirubindiglucuronide
0
inhibitor binds to enzyme at same site as substrate
33. The extent to which measurements agree with or approach the true value of the quantity being measured is referred to as...
inhibitor binds to enzyme at same site as substrate
BUN 80
1 mol/kg
accuracy
34. This 2-hour postprandial glucose values demonstrates unequivocal hyperglycemia diagnostic for diabetes mellitus
ionization of carboxyl groups (yielding a net negative charge)
Prolactin
the same as plasma glucose
200
35. This serum protein migrates with the beta-globulins on cellulose acetate at pH 8.6...
T4 by RIA
hyperventilation
electric current
C3 complement
36. This is a regulatory hormone.
sharp cutoff filter
parathyroid hormone
standard
albumin
37. Lithium therapy is widely used in the treatment of...
manic-depression
transferrin
impaired response to ACTH stimulation
thymolpthalein monophosphate
38. Stray light can be detected in a spectrophotometer by utilizing a...
sharp cutoff filter
glucose oxidase
LDL
volumetric flask
39. Which percentage of total serum calcium is nondiffusible protein bound?
iron hemochromatosis
binding capacity of thyroxine-binding globulin
40-50
methyl alcohol
40. This serum constituent is unstable if a blood specimen is left standing at room temperature for 8 hours before processing
bilirubin
correct for variations in light intensity
glucose
acute hepatitis
41. A technician is asked by the supervisor to prepare a standard solution from the stock standard. What is the glassware of choice for this solution?
one micromole/minute
@ 100
volumetric flask
iron deficiency anemia
42. What specimen preparation is commonly used to perform the alkaline phosphatase isoenzyme determination?
100nmol
serum aliquots - one heated
boderline results test should be repeated
bicarbonate carbonic acid
43. A breakdown product of hemoglobin is...
4.5
parathyroid hormone
bilirubin
carbs
44. How many grams of sodium chloride are needed to prepare 1 L of 0.9% normal saline?
9
run a new set of controls
diet
lower than in adults
45. A blood creatinine value of 5.0 mg/dL is most likely to be found with this blood value?
emphysema
para-hydroxylphenyl...
BUN 80
1.1
46. A condition in which erythrocyte protoporphyrin is increased is...
4.5
iron deficiency anemia
triglycerides
5mg higher
47. Detection of carriers of hereditary coproporphyria should include analysis of...
dirty electrodes
fresh morning urine for delta-aminolevulinic acid
corticosterone
binding capacity of thyroxine-binding globulin
48. In automated methods utilizing a bichromatic analyzer - dual wavelengths are employed to...
ceruplasmin
crigler
TLC
minimize the effects of interference
49. The anticonvulsant used to control tonic-clonic (grand mal) seizures is...
phenytoin
measurement of absorbance at 450
exposure to CO
potassium dichromate in SA
50. Zinc protoporphyrin or free erythrocyte protoporphyrin measurements are useful to assess blood concentrations of...
lead
thiamine
fraction absorbed into systemic circulation
D
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