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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. This diseases results from a familial absence of high-density lioprotein
fall in pH - rise in pCO2
Calcium - phosphorus
respiratory acidosis
Tangier
2. In monitoring glomerular function - this test has the highest sensitivity
glass
creatinine clearance
alpha 2 beta
Mg
3. In respiratory acidosis - a compensatory mechanism is the increase in...
carbs
show a decrease in glycosylated hgb
T4 by RIA
plasma bicarbonate
4. Patients with Cushing's syndrome exhibit...
pCO2
peptide bonds
serum cortisol > 15
bilirubindiglucuronide
5. Magnesium carbonate is added in an iron binding capacity determination in order to...
remove excess unbound iron
parathyroid
no decrease in serum growth hormone after 90 minutes
heparin
6. The first step in analyzing a 24-hour urine specimen for quantitative urine protein is...
measure the total volume
5mg higher
prostate
primidone
7. 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...
NADH
100nmol
transferrin
atomic absorption
8. This enzymes catalyzes the conversion of starch to glucose and maltose
incorrect aqueous to nonaqueous mixture
bicarbonate buffer
amylase
HCT
9. The presence of this isoenzymes indicates acute myocardial damage
serum aliquots - one heated
testosterone
CK-MB
amylase and lipase
10. This wavelengths is within the ultraviolet rang.
340
carbohydrate hyperalimentation
measurement of absorbance at 450
pCO2
11. 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
methadone
amylase
bilirubindiglucuronide
viral hepatitis
12. Total iron-binding capacity measures the serum iron transporting capacity of...
2Na + glucose over 20 + BUN over 3
amytriptyline 104
improving state of metabolic control (as indicated by fructosamine)
transferrin
13. A patient is admitted with biliary cirrhosis. If a serum protein electrophoresis is preformed - these globulin fractions will be most elevated?
parathyroid
beta
peroxidase-like activity of hemoglobin
absorptivity x light path x concentration
14. One means of checking a spectrophotometer wavelength calibration in the visible range is by using a...
LDH
didymium filter
respiratory acidosis
the same as plasma glucose
15. The anticonvulsant used to control tonic-clonic (grand mal) seizures is...
benzoylecogine
phenytoin
high carbohydrate diet for 3 days
primidone
16. The urea nitrogen concentration of a serum sample was measured as 15 mg/dL (atomic weights: carbon = 12 - oxygen = 16 - nitrogen = 14 - hydrogen = 1). The urea concentration of the same sample - in mg/dL - is...
normal - liver breakdown
32
attaching them to protein molecules
placenta
17. 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...
growth - third trimester of pregnancy
digoxin
200x affinity for oxygen
multiplied by 4
18. A carbonate salt used to control manic-depressive disorders is...
parathyroid hormone
measurement of absorbance at 450
primary hyperparathyroidism
lithium
19. Acidosis and alkalosis are best defined as fluctuations in blood pH and CO2 content due to changes in...
acid phosphatase
bicarbonate buffer
270
GGT
20. A patient has signs and symptoms suggestive of acromegaly. The diagnosis would be confirmed if the patient had...
urobilin
remove excess unbound iron
parathyroid hormone
no decrease in serum growth hormone after 90 minutes
21. 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...
Tay-sachs
Prolactin
Temperature is a function of the number of particles in solution
triglycerides
22. Scurvy is associated with deficiency of...
Mg
brain
C
120 minutes
23. Blood specimens for digoxin assays should be obtained between 8 hours or more after drug administration because...
accuracy
occult blood
tissue and serum levels need to reach equilibrium
boderline results test should be repeated
24. Respiratory acidosis is described as a(n): ______ increase in CO2 decrease in pH
glycerol
C
bicarbonate buffer
pilocarpine
25. The function of the major lipid components of the very low density lipoproteins (VLDL) is to transport...
standard
CK-MB
parathyroid
endogenous triglycerides
26. 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...
show a decrease in glycosylated hgb
1 micromole per minute
growth - third trimester of pregnancy
NADH
27. A true statement about high performance liquid chromatography (HPLC) is that it...
parathyroid
can be used for absorbtion - partition - ion exchange - and gel permeation chromatography
glass
sharp fibrinogen peak
28. A 68-year-old man arrives in the emergency room with a glucose level of 722 mg/dL and serum acetone of 4+ undiluted. An arterial blood gas from this patient is likely to indicate...
increased vasoconstriction
coulometry
hepatobiliary (obstruction?)
low pH
29. Gas chromatography with the nitrogen/phosphorus detector is the most commonly used technique for the analysis of...
cyclic antidepressants
can be used for absorbtion - partition - ion exchange - and gel permeation chromatography
band width
inclusion of smokers and nonsmokers in the study population
30. This condition does decrease activity of glucuronyl transferase result in increased unconjugated bilirubin and kernicterus in neonates
band width
specificity
crigler
increased O2 decreased HCO3
31. 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
lactic acidosis
ALP with fresh draw
freezing point
iron hemochromatosis
32. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are both elevated in this disease
measure the total volume
GGT
faster than gamma
viral hepatitis
33. 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
ceruplasmin
conjugated hyperbilirubinemia - hepatocellular obstruction
creatinine
sharp cutoff filter
34. The following five sodium control values (mEq/L) were obtained:140 - 135 - 138 - 140 - 142Calculate the coefficient of variation.
CK-MB
chemical ionization matrix
biuret
1.9
35. Bioavailability of a drug refers to the...
fraction absorbed into systemic circulation
creatine kinase
thymolpthalein monophosphate
growth - third trimester of pregnancy
36. 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?
A1c
run a new set of controls
sodium
specimen exposure to light
37. The formula for calculating absorbance given the percent transmittance (%T) of a solution
tissue and serum levels need to reach equilibrium
2-log(T)
2Na + glucose over 20 + BUN over 3
LDH
38. The biuret reaction for the analysis of serum protein depends on the number...
peptide bonds
thiamine
CO2
glucose
39. A one MOLAL solution is equivalent to...
dirty electrodes
1 mol/kg
sample exposed to light
SD over mean
40. The unit of measure for a standard solution is...
fresh morning urine for delta-aminolevulinic acid
ALP with fresh draw
viral hepatitis
mg/ml
41. In a normal individual - injection of thyrotropin-releasing hormone (TRH) causes an increase in blood concentrations of this hormone
the fetus is at risk for respiratory distress
draw blood for glucose and discontinue test
0
Prolactin
42. The most important buffer pair in plasma is the...
bicarbonate carbonic acid
CML
show a decrease in glycosylated hgb
is quantitated by the amount of light produced
43. In the assay of lactate dehydrogenase - this product is actually measured
NADH
potassium dichromate in SA
enzyme induction
sample exposed to light
44. The regulation of calcium and phosphorus metabolism is accomplished by which gland?
parathyroid
impaired response to ACTH stimulation
GGT
CO2 and pH elevated
45. A common cause of a falsely increased LD1 fraction of lactic dehydrogenase is...
wavelength
hemolysis
specificity
O2
46. This electrolyte is the chief plasma cation whose main function is maintaining osmotic pressure
freezing point
oxalacetate to malate
sodium
specificity
47. An HPLC operator notes that the column pressure is too high - is rising too rapidly - and the recorder output is not producing normal peaks. The most probable cause of the problem is...
effluent line is obstructed
be able to detect 9/10 simple instrument malfunctions
CK
4.5
48. 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...
transferrin
placenta
iron hemochromatosis
exposure to CO
49. This chemical determination may be of help in establishing the presence of seminal fluid
acid phosphatase
measurement of absorbance at 450
Tay-sachs
check serum for hemolysis
50. Certain enzymes are activated to metabolize drugs as a result of another drug action. This is referred to as...
enzyme induction
alkaline picrate
volumetric flask
20:1