SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. A course of instruction is being planned to teach laboratory employees to correct simple malfunctions in selected laboratory instruments. In writing the objectives for this course - this would be most appropriate?
ceruplasmin
thiamine
be able to detect 9/10 simple instrument malfunctions
run a new set of controls
2. 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.
591
ionization of carboxyl groups (yielding a net negative charge)
spun separated iced and tested immediately
normal - liver breakdown
3. The method of choice for diagnosis of a protracted attack of porphyria is...
HPLC analysis of porpobilinogen on 24hr urine
(testing of urine for) delta-am.. acid
alpha 2 beta
parathyroid
4. A thick white turbid specimen was received in the laboratory labeled as pericardial fluid. A microscopic examination was performed - and the differential included 90% PMNs. The fluid is...
tissue and serum levels need to reach equilibrium
band width
parathyroid
purulent
5. The general types of interference in atomic absorption spectrophotometry...
hyperventilation
chemical ionization matrix
TSH
para-hydroxylphenyl...
6. The test for adrenal cortical hyperfunction that has the greatest diagnostic sensitivity is measurement of...
sample exposed to light
urinary free cortisol
have a negative charge
Hb S
7. A patient with glomerulonephritis would present the following serum results...
BUN increased
urobilin
no ice clots bubbles
acute hepatitis
8. A patient is admitted to the emergency room in a state of metabolic alkalosis.This would be consistent with this diagnosis?
high co2 and hco3
glass
high carbohydrate diet for 3 days
porphobilinigen SCREEN
9. 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?
decreased lecithin
nondiagnostic for MS
run a new set of controls
monitoring the course of a known cancer
10. The formation of estriol in a pregnant woman is dependent on...
fetal and placenta function
analyzed immediately
parathyroid hormone
act as carriers for ions
11. Lasting serum phosphate concentration is controlled primarily by the...
Temperature is a function of the number of particles in solution
parathyroid hormone
90%
parathyroid
12. Which blood gas electrode is composed of calomel and glass?
CO2
chloride
porphyrin and porphobilinogen screen
creatinine clearance
13. Phenobarbital is a metabolite of...
21-hydroxylase deficiency
pituitary
primidone
hepatobiliary (obstruction?)
14. 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?
analyzed immediately
fresh morning urine for delta-aminolevulinic acid
the fetus is at risk for respiratory distress
thyroxine binding globulin
15. The function of the major lipid components of the very low density lipoproteins (VLDL) is to transport...
glycerol
breast cancer
phenytoin
endogenous triglycerides
16. Following overnight fasting - hypoglycemia in adults is defined as a glucose of...
A1
valine leucine isoleucine
turn off
<45
17. TSH is produced by the...
pituitary
32
bone
lactic acidosis
18. An emphysema patient suffering from fluid accumulation in the alveolar spaves is likely to be in what metabolic state?
200
bicarbonate carbonic acid
catalyze redox reactions
respiratory ACIDOSIS
19. Measurement of total T4 by competitive protein binding or displacement is based on the specific binding properties of...
sodium potassium chloride CO2
urobilin
without a disease with a negative test result
thyroxine binding globulin
20. When separating serum proteins by cellulose acetate electrophoresis using veronal buffer at pH 8.6 - beta globulin migrates...
faster than gamma
volumetric flask
hepatobiliary (obstruction?)
F
21. At blood pH 7.40 what is the ratio between bicarbonate and carbonic acid?
T4 by RIA
thiamine
iron hemochromatosis
20:1
22. Total iron-binding capacity measures the serum iron transporting capacity of...
enzyme induction
amylase
transferrin
catalyze redox reactions
23. A serum potassium is 19.5 mg/100 mL. This value is equal to how many mEq/L (MW of K = 39)?
peroxidase-like activity of hemoglobin
no ice clots bubbles
5
patient noncompliance
24. The formula for calculating serum osmolality that incorporates a correction for the water content of plasma is...
run a new set of controls
prostate
chylomicrons
2Na + glucose over 20 + BUN over 3
25. In monitoring glomerular function - this test has the highest sensitivity
porphobilinogen screen
porphyrin and porphobilinogen screen
have a negative charge
creatinine clearance
26. This enzyme substrates for prostatic acid phosphatase determination results in the highest specificity
prisms and grating
thymolpthalein monophosphate
acute hepatitis
increased O2 decreased HCO3
27. A common cause of a falsely increased LD1 fraction of lactic dehydrogenase is...
hyperventilation
100nmol
hemolysis
potassium dichromate in SA
28. The electrophoretic pattern of a plasma sample compared with a serum sample shows a...
sharp fibrinogen peak
20:1
is quantitated by the amount of light produced
120 minutes
29. Blood specimens for digoxin assays should be obtained between 8 hours or more after drug administration because...
breast cancer
ceruplasmin
tissue and serum levels need to reach equilibrium
parathyroid
30. 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...
pO2 increased HCO3 decreased
120 minutes
acute hepatitis
heparin
31. Lithium therapy is widely used in the treatment of...
glucose oxidase
manic-depression
O2
incorrect aqueous to nonaqueous mixture
32. Upon development of a thin layer chromatogram for the drug analysis - all drug spots (including the standards) had migrated with the solvent front. The most probable cause for this would be...
high co2 and hco3
pO2 increased HCO3 decreased
pituitary
incorrect aqueous to nonaqueous mixture
33. This method offers the greatest sensitivity for HBsAg testing
GLC
without a disease with a negative test result
enzyme immunoassay
scattered at a right angle
34. 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...
triglycerides
specificity
brain
cancel test
35. Amino acid associated with a sulfhydryl group
ionization of carboxyl groups (yielding a net negative charge)
para-hydroxylphenyl...
cysteine
chloride
36. On immunoassays using enzyme-labeled antibodies or antigens: ___________ can be carried out with a spectrophotometer
quantitation of label
pH pCO2 pO2
measurement of absorbance at 450
serum cortisol > 15
37. The definitive diagnosis of primary adrenal insufficiency requires demonstration of...
impaired response to ACTH stimulation
1 micromole per minute
ionization of carboxyl groups (yielding a net negative charge)
mg/ml
38. Oligoclonal bands are present on electrophoresis of concentrated CSF and also on concurrently tested serum of the same patient. The proper interpretation is...
Solute moves half the distance of the solvent front
the fetus is at risk for respiratory distress
heparin
nondiagnostic for MS
39. The expected blood gas results for a patient in chronic renal failure would match the pattern of...
properties of the membrane
BUN 80
9
metabolic acidosis
40. In the Jaffe reaction - creatine reacts with...
120 minutes
alkaline picrate
3500
diet
41. The hemoglobin that is resistant to alkali (KOH) denaturation is...
whole blood can be used
without a disease with a negative test result
F
can be used for absorbtion - partition - ion exchange - and gel permeation chromatography
42. 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
bone
thyroxine
20:1
43. In electrophoresis of serum proteins - arifacts at the application point are most frequently caused by...
biuret
32
dirty applicators
transferrin
44. A serum sample for acid phosphatase determination is best prepared for room temperature storage by...
adding an acid stabilizer
incorrect aqueous to nonaqueous mixture
ammonia
show a decrease in glycosylated hgb
45. Unless blood gas measurements are made immediately after sampling - in vitro glycolysis of the blood causes a...
show a decrease in glycosylated hgb
bilirubindiglucuronide
fall in pH - rise in pCO2
270
46. A potassium level of 6.8 mEq/L is obtained. Before reporting the results - the first step the technologist should take is to...
conjugated hyperbilirubinemia - hepatocellular obstruction
check serum for hemolysis
creatinine clearance
viral hepatitis
47. A carbonate salt used to control manic-depressive disorders is...
lithium
porphobilinogen screen
CK
g/MW
48. This is a glycolytic enzyme that catalyzes the cleavage of fructose-1 - 6-diphosphate to glyceraldehyde-3-phosphate and dihydroxyacetone phosphate
2Na + glucose over 20 + BUN over 3
specimen exposure to light
testosterone
aldolase
49. Gel filtration chromatography is used to separate...
LDH
act as carriers for ions
ammonia
cmpds based on molecular weight and size
50. This steroid is an adrenal cortical hormone
one micromole/minute
absorptivity x light path x concentration
corticosterone
g/MW