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. Pregnant women with symptoms of thirst - frequent urination - or unexplained weight loss should have this test performed?
monitoring the course of a known cancer
enzyme immunoassay
act as carriers for ions
glucose tolerance test

2. In electrophoresis of proteins - when the sample is placed in an electric field connected to a buffer of pH 8.6 - all of the proteins...
lead
potassium dichromate in SA
transferrin
have a negative charge

3. This chemical determination may be of help in establishing the presence of seminal fluid
acid phosphatase
alpha 2 beta
5
spun separated iced and tested immediately

4. This hemoglobin has glucose-6-phosphate on the amino-terminal valine of the beta chain?
TLC
A1c
potassium dichromate in SA
B12 deficiency

5. The function of the major lipid components of the very low density lipoproteins (VLDL) is to transport...
creatinine clearance
trig
there is an absence of correlation
endogenous triglycerides

6. In a normal individual - injection of thyrotropin-releasing hormone (TRH) causes an increase in blood concentrations of this hormone
crigler
T4 by RIA
Prolactin
alkaline picrate

7. Bile acid concentrations are useful to assess...
accuracy
lead
agarose
hepatobiliary (obstruction?)

8. An emphysema patient suffering from fluid accumulation in the alveolar spaves is likely to be in what metabolic state?
correct for variations in flame and atomizer
respiratory ACIDOSIS
is quantitated by the amount of light produced
270

9. 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?
acute intermittent porphyria
20:1
ionization of carboxyl groups (yielding a net negative charge)
TSH

10. The different water content of erythrocytes and plasma makes true glucose concentrations in whole blood a function of the...
glycerol
attaching them to protein molecules
HCT
effluent line is obstructed

11. A 45-year-old woman has a fasting serum glucose concentration of 95 mg/dL and a 2-hour postprandial glucose concentration of 105 mg/dL. The statement that best describes this patient's fasting serum glucose concentration is...
diet
1.1
parathyroid hormone
normal - liver breakdown

12. An acid cleaning solution for glassware consists of...
32
testosterone
endosmosis
potassium dichromate in SA

13. A low concentrarion of serum phosphorus is commonly found in...
porphobilinigen SCREEN
intestinal malabsorption
Hb S
carbohydrate hyperalimentation

14. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions
acid phosphatase
1:5
thiamine
albumin

15. In respiratory acidosis - a compensatory mechanism is the increase in...
WITHOUT a disease with a negative test
plasma bicarbonate
1.9
1 micromole per minute

16. 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...
atomic absorption
digoxin
be able to detect 9/10 simple instrument malfunctions
primary hyperparathyroidism

17. The stimulant that causes localized sweating for the sweat test is...
creatinine
testosterone
pilocarpine
glycerol

18. 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...
be able to detect 9/10 simple instrument malfunctions
run a new set of controls
CML
pO2 increased HCO3 decreased

19. Analysis of erythrocytes for uroporphyrinogen I synthetase detects...
elevated lactic acid - elevated pyruvate
acute intermittent porphyria
thyroxine binding globulin
thyroxine

20. In a double-beam photometer - the additional beam is used to...
acute hepatitis
fraction absorbed into systemic circulation
correct for variations in light intensity
can be used for absorbtion - partition - ion exchange - and gel permeation chromatography

21. The concentration of serum carotene is affected MOST by...
65
diet
hyperventilation
4.5

22. The most common type of congenital adrenal hyperplasia associated with increased plasma concentrations of 17 a-hydroxyprogesterone and increased urinary excretion of pregnanetriol is...
specificity
21-hydroxylase deficiency
urobilin
TSH

23. The formula for calculating serum osmolality that incorporates a correction for the water content of plasma is...
2Na + glucose over 20 + BUN over 3
prostate
respiratory ACIDOSIS
creatinine

24. 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?
specificity
glucose
the fetus is at risk for respiratory distress
F

25. The T3 resin uptake test is a measure of...
SD over mean
binding capacity of thyroxine-binding globulin
sharp fibrinogen peak
enzyme immunoassay

26. The identification of Bence Jones protein is best accomplished by...
immunofixation
acute hepatitis
low pH
1.1

27. Diagnostic specificity is defined as the percentage of individuals...
can be used for absorbtion - partition - ion exchange - and gel permeation chromatography
1 mol/kg
A1
without a disease with a negative test result

28. Zinc protoporphyrin or free erythrocyte protoporphyrin measurements are useful to assess blood concentrations of...
120 minutes
5mg higher
chylomicrons VLDL
lead

29. Lithium therapy is widely used in the treatment of...
65
chylomicrons VLDL
manic-depression
HDL

30. The osmolality of a urine or serum specimen is measured by a change in the...
freezing point
elevated lactic acid - elevated pyruvate
plasma bicarbonate
fall in pH - rise in pCO2

31. The relative migration rate of proteins on cellulose acetate is based on...
ionic charge
viral hepatitis
para-hydroxylphenyl...
pO2 increased HCO3 decreased

32. Isoenzyme assays are preformed to improve...
cmpds based on molecular weight and size
mg/ml
low pH
specificity

33. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are both elevated in this disease
respiratory ACIDOSIS
CK-MB
scattered at a right angle
viral hepatitis

34. Certain enzymes are activated to metabolize drugs as a result of another drug action. This is referred to as...
ionic charge
enzyme induction
creatinine
emphysema

35. Serum haptoglobin...
can be separated into distinct phenotypes
20:1
primidone
MI

36. This enzyme substrates for prostatic acid phosphatase determination results in the highest specificity
9
chloride
thymolpthalein monophosphate
21-hydroxylase deficiency

37. The greatest activities of serum AST and ALT are seen in...
acute hepatitis
parathyroid
2Na + glucose over 20 + BUN over 3
cmpds based on molecular weight and size

38. 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
200
normal - liver breakdown
TLC

39. Blood received in the laboratory for blood gas analysis must meet these requirements
Tangier
no ice clots bubbles
check serum for hemolysis
respiratory acidosis

40. 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...
pilocarpine
cancel test
CO2 and pH elevated
CML

41. Lasting serum phosphate concentration is controlled primarily by the...
parathyroid
340
GLC
creatinine clearance

42. The osmolality of a urine or serum specimen is measured by a change in the...
3500
freezing point
faster than gamma
1:5

43. This method offers the greatest sensitivity for HBsAg testing
potassium dichromate in SA
Tangier
enzyme immunoassay
breast cancer

44. On immunoassays using enzyme-labeled antibodies or antigens: ___________ can be carried out with a spectrophotometer
quantitation of label
glucose tolerance test
GGT
3500

45. The TRH (thyrotropin-releasing hormone) stimulation test is useful in assessing...
low pH
hyperthyroidism
high carbohydrate diet for 3 days
primidone

46. The expected blood gas results for a patient in chronic renal failure would match the pattern of...
coulometry
urobilin
chylomicrons VLDL
metabolic acidosis

47. A serum sample for acid phosphatase determination is best prepared for room temperature storage by...
glucose oxidase
iron deficiency anemia
cholesterol normal triglycerides elevated
adding an acid stabilizer

48. Fluctuation of the needle on a coulometric type titrator is most probably due to...
1 micromole per minute
dirty electrodes
the fetus is at risk for respiratory distress
NADH

49. A sweat chloride result of 55 mEq/L and a sweat sodium of 52 mEq/L were obtained ona patient who has a history of respiratory problems. The bestc interpretation of these results is...
elevated lactic acid - elevated pyruvate
sodium potassium chloride CO2
boderline results test should be repeated
TSH

50. A person suspected of having metabolic alkalosis would have these laboratory findings
CO2 and pH elevated
g/MW
porphyrin and porphobilinogen screen
acute hepatitis