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 reciprocal relationship exists between...
Calcium - phosphorus
parathyroid hormone
crigler
lower than in adults
2. The most consistent analytical error involved in the routine determination of HDLcholesterol is caused by...
bicarbonate buffer
a small concentration of APO-B containing lipoproteins after precipitation
viral hepatitis
5mg higher
3. 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...
acute intermittent porphyria
cancel test
1:5
bilirubin
4. Currently the most common method for specific identification and quantitation of serum barbiturates is...
GLC
trig
thyroxine
HDL
5. Assay of transketolase activity in blood is used to detect deficiency of...
digoxin
fetal and placenta function
40-50
thiamine
6. The serum glucose concentration of a diabetic patient undergoing a 2-hour glucose tolerance test should return to the baseline (fasting level) after a minimum of...
sharp cutoff filter
serum aliquots - one heated
oxalacetate to malate
120 minutes
7. The unit of measure for a standard solution is...
analyzed immediately
boderline results test should be repeated
mg/ml
200x affinity for oxygen
8. The most heat labile fraction of alkaline phosphatase is obtained from...
is quantitated by the amount of light produced
CO2 and pH elevated
ceruplasmin
bone
9. TSH is produced by the...
C3 complement
5 tri 15 cholesterol 50 protein
HDL
pituitary
10. A test request slip indicates that an acute porphyric attack is suspected clinically. Analysis should include...
D
nephelometry
porphobilinogen screen
breast cancer
11. The greatest activities of serum AST and ALT are seen in...
TSH
high carbohydrate diet for 3 days
acute hepatitis
2-log(T)
12. A carbonate salt used to control manic-depressive disorders is...
CO2 and pH elevated
changes in the fuel
hepatobiliary (obstruction?)
lithium
13. About 90% of phenytoin is excreted in the urine as...
lithium
para-hydroxylphenyl...
high carbohydrate diet for 3 days
intestinal malabsorption
14. 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
conjugated hyperbilirubinemia - hepatocellular obstruction
3500
chloride
increased O2 decreased HCO3
15. 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...
triglycerides
cancel test
remove excess unbound iron
methyl alcohol
16. The formula for calculating absorbance given the percent transmittance (%T) of a solution
endogenous triglycerides
ammonia
2-log(T)
fall in pH - rise in pCO2
17. The formula for calculating the amount of moles of a chemical?
g/MW
wavelength
glass
ALP with fresh draw
18. Hydrogen ion concentration (pH) in blood is usually determined by means of these electrodes?
draw blood for glucose and discontinue test
aldolase
specificity
glass
19. Spectrophotometers isolate a narrow band pass by means of...
GGT
nephelometry
prisms and grating
ceruplasmin
20. Lithium therapy is widely used in the treatment of...
acid phosphatase
@ 100
manic-depression
breast cancer
21. Certain enzymes are activated to metabolize drugs as a result of another drug action. This is referred to as...
CO2
oxalacetate to malate
monitoring the course of a known cancer
enzyme induction
22. The most widely used support medium for electrophoretic separation of lipoproteins is...
CO2 and pH elevated
pilocarpine
run a new set of controls
agarose
23. Before unconjugated bilirubin can react with Ehrlich's diazo reagent - this must be added
methyl alcohol
hyperventilation
21-hydroxylase deficiency
spun separated iced and tested immediately
24. Most drugs and intracellular metabolites measured by radioimmunoassay have molecular weights between 200 and 1000 and can be made immunogenic by...
minimize the effects of interference
Wilson's disease
attaching them to protein molecules
0
25. This is a characteristic shared by lactate dehydrogenase - malate dehydrogenase - isocitrate dehydrogenase - and hydroxybutyrate dehydrogenase?
catalyze redox reactions
is quantitated by the amount of light produced
carbs
21-hydroxylase deficiency
26. This method employs a highly specific antibody to thyroxine
primidone
HCT
T4 by RIA
parathyroid hormone
27. Zinc protoporphyrin or free erythrocyte protoporphyrin measurements are useful to assess blood concentrations of...
A1c
lead
(testing of urine for) delta-am.. acid
minimize the effects of interference
28. In competitive inhibition of an enzyme reaction the...
freezing point
inhibitor binds to enzyme at same site as substrate
run a new set of controls
parathyroid
29. In electrophoresis of serum proteins - arifacts at the application point are most frequently caused by...
multiplied by 4
primidone
dirty applicators
turn off
30. The extent to which measurements agree with or approach the true value of the quantity being measured is referred to as...
enzyme induction
catalyze redox reactions
accuracy
acute hepatitis
31. 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?
volumetric flask
fall in pH - rise in pCO2
respiratory ACIDOSIS
run a new set of controls
32. 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?
lead
Solute moves half the distance of the solvent front
g/MW
pituitary
33. 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?
340
the fetus is at risk for respiratory distress
cancel test
absorptivity x light path x concentration
34. At blood pH 7.40 what is the ratio between bicarbonate and carbonic acid?
fresh morning urine for delta-aminolevulinic acid
heparin
porphyrin and porphobilinogen screen
20:1
35. In a double-beam photometer - the additional beam is used to...
increase in total circulating T4
Solute moves half the distance of the solvent front
4.5
correct for variations in light intensity
36. This elevates carboxyhemoglobin?
ammonia
fraction absorbed into systemic circulation
standard
exposure to CO
37. While performing a serum lithium determination on a flame photometer with cesium as the internal standard - the technologist noticed that there was a flickering flame. The most probable cause of this problem is...
have a negative charge
aldolase
creatinine
changes in the fuel
38. An automated method for measuring chloride that generates silver ions in the reaction is...
sharp fibrinogen peak
100nmol
coulometry
primidone
39. Bromcresol purple at a pH of 5.2 is used in a colorimetric method to measure...
591
Wilson's disease
Mg
albumin
40. The concentration of serum carotene is affected MOST by...
acid phosphatase
diet
ammonia
digoxin
41. The main reason for suboptimal drug levels in therapeutic drug monitoring is...
glass
methadone
patient noncompliance
albumin
42. Following overnight fasting - hypoglycemia in adults is defined as a glucose of...
HDL
F
<45
glucose tolerance test
43. Quantitation of NA+ and K+ by ion-selective electrode is more rapid than flame photometry because...
didymium filter
amytriptyline 104
sharp cutoff filter
whole blood can be used
44. 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...
HPLC analysis of porpobilinogen on 24hr urine
quantitation of label
cysteine
emphysema
45. Isoenzyme assays are preformed to improve...
2-log(T)
specificity
brain
B12 deficiency
46. The direction in which albumin migrates (ie - toward anode or cathode) during electrophoretic separation of serum proteins - at pH 8.6 - is determined by...
atomic absorption
thymolpthalein monophosphate
ionization of carboxyl groups (yielding a net negative charge)
glucose
47. This serum protein migrates with the beta-globulins on cellulose acetate at pH 8.6...
C3 complement
cancel test
para-hydroxylphenyl...
immunofixation
48. Serum anion gap is increased in patients with...
peptide bonds
lactic acidosis
Calcium - phosphorus
monitoring the course of a known cancer
49. Unless blood gas measurements are made immediately after sampling - in vitro glycolysis of the blood causes a...
changes in the fuel
freezing point
dirty applicators
fall in pH - rise in pCO2
50. 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...
electric current
digoxin
40-50
no decrease in serum growth hormone after 90 minutes