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. The concentration of serum carotene is affected MOST by...
creatinine
amylase and lipase
placenta
diet
2. In competitive inhibition of an enzyme reaction the...
parathyroid
inhibitor binds to enzyme at same site as substrate
parathyroid hormone
Hb S
3. The major fraction of organic iodine in the circulation is in the form of...
CML
placenta
<45
thyroxine
4. About 90% of phenytoin is excreted in the urine as...
aldolase
ratio of distance moved by solvent to distance moved by compound
acute hepatitis
para-hydroxylphenyl...
5. 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...
urinary free cortisol
0
low pH
enzyme induction
6. Coulometry is used to measure...
biuret
chloride
@ 100
minimize the effects of interference
7. A patient had the following serum results: Na+ 140 mEq/L K+ 4.0 mEq/L Glucose 95 mg/dL BUN 10 mg/dL Which osmolality is consistent with these results?
270
CML
TSH
BUN increased
8. This hemoglobin has glucose-6-phosphate on the amino-terminal valine of the beta chain?
electric current
1.1
A1c
sodium potassium chloride CO2
9. Before unconjugated bilirubin can react with Ehrlich's diazo reagent - this must be added
high co2 and hco3
have a negative charge
methyl alcohol
thiamine
10. The preparation of a patient for standard tolerance testing should include...
high carbohydrate diet for 3 days
O2
primary hyperparathyroidism
65
11. This enzymes catalyzes the conversion of starch to glucose and maltose
transferrin
chemical ionization matrix
amylase
electric current
12. This enzyme substrates for prostatic acid phosphatase determination results in the highest specificity
thymolpthalein monophosphate
nephelometry
remove excess unbound iron
run a new set of controls
13. When taken by a euthyroid individual - oral contraceptives containing estrogens will have this effects on the thyroid function studies
ALP with fresh draw
absorptivity x light path x concentration
increase in total circulating T4
T4 by RIA
14. 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?
be able to detect 9/10 simple instrument malfunctions
4.5
cysteine
bilirubindiglucuronide
15. The definitive diagnosis of primary adrenal insufficiency requires demonstration of...
absorptivity x light path x concentration
Mg
impaired response to ACTH stimulation
scattered at a right angle
16. The biologically most active - naturally occuring androgen is...
testosterone
lead
agarose
lead
17. What substance gives feces its normal color?
no ice clots bubbles
digoxin
scattered at a right angle
urobilin
18. In familial hypercholesterolemia - the hallmark finding is an elevation of...
5
LDL
exchange of amino and keto groups
sodium potassium chloride CO2
19. In electrophoresis of serum proteins - arifacts at the application point are most frequently caused by...
dirty applicators
purulent
measure the total volume
acute hepatitis
20. Technical problems encountered during the collection of an amniotic fluid specimen caused doubt as to whether the specimen was amniotic in origin. This procedure would establish that the fluid is amniotic in origin
9
draw blood for glucose and discontinue test
creatinine
amylase and lipase
21. The general types of interference in atomic absorption spectrophotometry...
lead
endosmosis
chemical ionization matrix
biuret
22. The most consistent analytical error involved in the routine determination of HDLcholesterol is caused by...
carbs
5mg higher
1.9
a small concentration of APO-B containing lipoproteins after precipitation
23. In the atomic absorption method for calcium - lanthanum is used...
SD over mean
hemolysis
remove excess unbound iron
prevent phosphate interference
24. The formula for calculating serum osmolality that incorporates a correction for the water content of plasma is...
volumetric flask
2Na + glucose over 20 + BUN over 3
electric current
pH = pKa + log (salt/acid)
25. Malic dehydrogenase is added to the aspartate aminotransaminase (AST) reaction to catalyze the conversion of...
mg/ml
oxalacetate to malate
albumin
fraction absorbed into systemic circulation
26. The direction in which albumin migrates (ie - toward anode or cathode) during electrophoretic separation of serum proteins - at pH 8.6 - is determined by...
SD over mean
ionization of carboxyl groups (yielding a net negative charge)
5
viral hepatitis
27. This disease is associated with the greatest elevation of lactate dehydrogenase isoenzyme 1?
32
A1c
B12 deficiency
cyclic antidepressants
28. The selectivity of an ion-selective electrode is determined by the...
NADH
lactic acidosis
WITHOUT a disease with a negative test
properties of the membrane
29. At blood pH 7.40 what is the ratio between bicarbonate and carbonic acid?
chylomicrons VLDL
20:1
sharp cutoff filter
iron deficiency anemia
30. Regan isoenzyme has the same properties as alkaline phosphatase that originates in the...
absorptivity x light path x concentration
A1c
placenta
one micromole/minute
31. Certain enzymes are activated to metabolize drugs as a result of another drug action. This is referred to as...
inhibitor binds to enzyme at same site as substrate
A1c
HCT
enzyme induction
32. This serum constituent is unstable if a blood specimen is left standing at room temperature for 8 hours before processing
100nmol
inhibitor binds to enzyme at same site as substrate
decreased lecithin
glucose
33. Aminotransferase enzymes catalyze the...
exchange of amino and keto groups
Wilson's disease
plasma bicarbonate
0
34. Total iron-binding capacity measures the serum iron transporting capacity of...
can be used for absorbtion - partition - ion exchange - and gel permeation chromatography
Temperature is a function of the number of particles in solution
glucose
transferrin
35. The osmolal gap is defined as measured Osm/kg minus the calculated Osm/kg. The average osmolal gap is near...
0
amytriptyline 104
Prolactin
effluent line is obstructed
36. This is a characteristic shared by lactate dehydrogenase - malate dehydrogenase - isocitrate dehydrogenase - and hydroxybutyrate dehydrogenase?
catalyze redox reactions
CK-MB
1.9
immunofixation
37. The reason carbon monoxide is so toxic is because it...
beta
200x affinity for oxygen
triglycerides
high co2 and hco3
38. The regulation of calcium and phosphorus metabolism is accomplished by which gland?
inhibitor binds to enzyme at same site as substrate
serum cortisol > 15
parathyroid
prostate
39. In amniotic fluid - the procedure used to detect Rh isosensitization is...
respiratory ACIDOSIS
glucose oxidase
measurement of absorbance at 450
conjugated hyperbilirubinemia - hepatocellular obstruction
40. Serum haptoglobin...
can be separated into distinct phenotypes
LDL
9
fetal and placenta function
41. The chemical composition of HDL- cholesterol corresponds to...
scattered at a right angle
standard
Prolactin
5 tri 15 cholesterol 50 protein
42. 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?
volumetric flask
120 minutes
the fetus is at risk for respiratory distress
purulent
43. The nanometer is a measurement of...
effluent line is obstructed
can be separated into distinct phenotypes
creatine kinase
wavelength
44. In the assay of lactate dehydrogenase - this product is actually measured
check serum for hemolysis
multiplied by 4
NADH
inclusion of smokers and nonsmokers in the study population
45. The buffering capacity of blood is maintained by a reversible exchange process between bicarbonate and...
prisms and grating
normal - liver breakdown
improving state of metabolic control (as indicated by fructosamine)
chloride
46. 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?
catalyze redox reactions
chylomicrons
specificity
endosmosis
47. This method offers the greatest sensitivity for HBsAg testing
Tay-sachs
Tangier
enzyme immunoassay
endogenous triglycerides
48. A psychiatric patient was experiencing sever depression - but responded to treatment with amitriptyline with no apparent side effects. A blood sample was sent to the laboratory for therapeutic monitoring. Which drug level would be MOST reflective of
quantitation of label
amytriptyline 104
carbs
porphobilinogen screen
49. The principle of the occult blood test depends on the...
pituitary
peroxidase-like activity of hemoglobin
decreased lecithin
chylomicrons VLDL
50. Most automated blood gas analyzers directly measure...
bilirubin
increased vasoconstriction
pH pCO2 pO2
Tangier
Sorry!:) No result found.
Can you answer 50 questions in 15 minutes?
Let me suggest you:
Browse all subjects
Browse all tests
Most popular tests
Major Subjects
Tests & Exams
AP
CLEP
DSST
GRE
SAT
GMAT
Certifications
CISSP go to https://www.isc2.org/
PMP
ITIL
RHCE
MCTS
More...
IT Skills
Android Programming
Data Modeling
Objective C Programming
Basic Python Programming
Adobe Illustrator
More...
Business Skills
Advertising Techniques
Business Accounting Basics
Business Strategy
Human Resource Management
Marketing Basics
More...
Soft Skills
Body Language
People Skills
Public Speaking
Persuasion
Job Hunting And Resumes
More...
Vocabulary
GRE Vocab
SAT Vocab
TOEFL Essential Vocab
Basic English Words For All
Global Words You Should Know
Business English
More...
Languages
AP German Vocab
AP Latin Vocab
SAT Subject Test: French
Italian Survival
Norwegian Survival
More...
Engineering
Audio Engineering
Computer Science Engineering
Aerospace Engineering
Chemical Engineering
Structural Engineering
More...
Health Sciences
Basic Nursing Skills
Health Science Language Fundamentals
Veterinary Technology Medical Language
Cardiology
Clinical Surgery
More...
English
Grammar Fundamentals
Literary And Rhetorical Vocab
Elements Of Style Vocab
Introduction To English Major
Complete Advanced Sentences
Literature
Homonyms
More...
Math
Algebra Formulas
Basic Arithmetic: Measurements
Metric Conversions
Geometric Properties
Important Math Facts
Number Sense Vocab
Business Math
More...
Other Major Subjects
Science
Economics
History
Law
Performing-arts
Cooking
Logic & Reasoning
Trivia
Browse all subjects
Browse all tests
Most popular tests