Test your basic knowledge |

Chemistry Certification

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 unit of measure for a standard solution is...
band width
mg/ml
parathyroid
coulometry

2. In amniotic fluid - the procedure used to detect Rh isosensitization is...
purulent
act as carriers for ions
creatinine clearance
measurement of absorbance at 450

3. When separating serum proteins by cellulose acetate electrophoresis using veronal buffer at pH 8.6 - beta globulin migrates...
5
amylase and lipase
faster than gamma
pH pCO2 pO2

4. In the Jaffe reaction - creatine reacts with...
alkaline picrate
there is an absence of correlation
Wilson's disease
monitoring the course of a known cancer

5. A test request slip indicates that an acute porphyric attack is suspected clinically. Analysis should include...
bone
porphobilinogen screen
be able to detect 9/10 simple instrument malfunctions
multiplied by 4

6. In automated methods utilizing a bichromatic analyzer - dual wavelengths are employed to...
corticosterone
minimize the effects of interference
@ 100
be able to detect 9/10 simple instrument malfunctions

7. A stool specimen that appears black and tarry should be tested for the presence of...
occult blood
ALP with fresh draw
1.9
monitoring the course of a known cancer

8. 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...
a small concentration of APO-B containing lipoproteins after precipitation
analyzed immediately
impaired response to ACTH stimulation
cancel test

9. The reason carbon monoxide is so toxic is because it...
200x affinity for oxygen
plasma bicarbonate
coulometry
M subunit is inactivated

10. The first step to be taken when attempting to repair a piece of electronic equipment is...
<45
<1%
carbs
turn off

11. How many grams of sodium chloride are needed to prepare 1 L of 0.9% normal saline?
9
bilirubindiglucuronide
monitoring the course of a known cancer
enzyme immunoassay

12. Analysis of erythrocytes for uroporphyrinogen I synthetase detects...
dirty applicators
acute intermittent porphyria
analyzed immediately
CK-MB

13. This wavelengths is within the ultraviolet rang.
340
carbs
B12 deficiency
multiplied by 4

14. 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...
digoxin
apoenzyme
tissue and serum levels need to reach equilibrium
sharp cutoff filter

15. One means of checking a spectrophotometer wavelength calibration in the visible range is by using a...
crigler
ratio of distance moved by solvent to distance moved by compound
cancel test
didymium filter

16. A 45-year-old woman complains of fatigue - heat intolerance - and hair loss. Serum thyroxine and 125I-T3 resin uptake are abnormally low. What test would confirm that this is a pituitary deficiency?
maintain colloidal osmotic pressure
TSH
testosterone
O2

17. The formula for calculating the amount of moles of a chemical?
pH = pKa + log (salt/acid)
g/MW
200x affinity for oxygen
C

18. 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?
1 mol/kg
100 nmol
minimize the effects of interference
endosmosis

19. Cocaine is metabolized to...
g/MW
parathyroid hormone
benzoylecogine
TLC

20. Turbidity in serum suggests elevation of...
chylomicrons
B12 deficiency
creatinine clearance
Tay-sachs

21. Ninety percent of the copper present in plasma is bound to...
run a new set of controls
potassium dichromate in SA
ceruplasmin
minimize the effects of interference

22. A carbonate salt used to control manic-depressive disorders is...
lithium
pCO2
carbs
brain

23. This disease is associated with the greatest elevation of lactate dehydrogenase isoenzyme 1?
T4 by RIA
properties of the membrane
freezing point
B12 deficiency

24. A patient in her 33rd week of pregnancy is hospitalized with toxemia. Her doctor would like to deliver the baby early because the toxemia is becoming more severe. The baby's best chance of delivery without respiratory distress due to lung immaturity
freezing point
L/S ratio > 3.5
tissue and serum levels need to reach equilibrium
inhibitor binds to enzyme at same site as substrate

25. Maple syrup urine disease is characterized by an increase in this urinary amino acids
valine leucine isoleucine
270
bicarbonate buffer
creatine kinase

26. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are both elevated in this disease
viral hepatitis
CO2 and pH elevated
sharp cutoff filter
pCO2

27. Most drugs and intracellular metabolites measured by radioimmunoassay have molecular weights between 200 and 1000 and can be made immunogenic by...
fall in pH - rise in pCO2
90%
methadone
attaching them to protein molecules

28. Lithium therapy is widely used in the treatment of...
band width
manic-depression
100nmol
beta

29. A test request slip indicates that an acute porphyric attack is suspected clinically. Analysis should include...
freezing point
porphobilinigen SCREEN
maintain colloidal osmotic pressure
digoxin

30. A pH of 7.0 represents a H+ concentration of...
fetal and placenta function
100nmol
prostate
HPLC analysis of porpobilinogen on 24hr urine

31. Zinc protoporphyrin or free erythrocyte protoporphyrin measurements are useful to assess blood concentrations of...
D
have a negative charge
lead
fresh morning urine for delta-aminolevulinic acid

32. A 25-year-old man became nauseated and vomited 90 minutes after receiving a standard 75-g carbohydrate dose for an oral glucose tolerance test. The best course of action is...
draw blood for glucose and discontinue test
A1
40-50
impaired response to ACTH stimulation

33. 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...
plasma bicarbonate
@ 100
a small concentration of APO-B containing lipoproteins after precipitation
atomic absorption

34. The measurement of light scattered by particles in the sample is the principle of...
nephelometry
specificity
specimen exposure to light
have a negative charge

35. This steroid is an adrenal cortical hormone
alpha 2 beta
freezing point
CO2
corticosterone

36. In thin layer chromatography - the Rf value for a compound is given by the...
NADH
serum aliquots - one heated
ratio of distance moved by solvent to distance moved by compound
Wilson's disease

37. The principle of the occult blood test depends on the...
F
glycerol
sodium
peroxidase-like activity of hemoglobin

38. A patient with malabsorption receives 25 g of d-xylose orally; during the subsequent 5-hour period - the urine excretion of d-xylose is less than 3 g. This would indicate...
intestinal malabsorption
1 micromole per minute
glucose
amytriptyline 104

39. This calcium procedure utilizes lanthanum chloride to emliminate iterfering substances
cmpds based on molecular weight and size
increased O2 decreased HCO3
atomic absorption
testing heparinized plasma

40. 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...
bilirubindiglucuronide
turn off
bilirubin
iron hemochromatosis

41. 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?
the fetus is at risk for respiratory distress
normal - liver breakdown
testing heparinized plasma
endogenous triglycerides

42. This is a regulatory hormone.
parathyroid hormone
glucose tolerance test
conjugated hyperbilirubinemia - hepatocellular obstruction
corticosterone

43. Serum concentrations of vitamin B12 are elevated in...
hemolysis
dihydroxyacetone side chain
CML
valine leucine isoleucine

44. Coulometry is used to measure...
5
chloride
parathyroid
32

45. A pH of 7.0 represents a H+ concentration of...
chloride
Mg
100 nmol
32

46. In competitive inhibition of an enzyme reaction the...
benzoylecogine
the fetus is at risk for respiratory distress
D
inhibitor binds to enzyme at same site as substrate

47. The different water content of erythrocytes and plasma makes true glucose concentrations in whole blood a function of the...
Prolactin
specificity
sharp fibrinogen peak
HCT

48. Quantitation of NA+ and K+ by ion-selective electrode is more rapid than flame photometry because...
whole blood can be used
breast cancer
the same as plasma glucose
cholesterol normal triglycerides elevated

49. Characteristic of the Bence Jones protein that is used to distinguish it from other urinary proteins is its solubility...
correct for variations in flame and atomizer
@ 100
boderline results test should be repeated
340

50. A fasting serum sample from an asymptomatic 43-year-old woman is examined visually chemically with the following results: Initial appearance of serum: Milky Appearance of serum after overnight refrigeration: Cream layer over turbid serum Triglyceri
enzyme induction
creatine kinase
BUN 80
chylomicrons VLDL