6 SYSTEMS OF MEASUREMENT, LABORATORY EQUIPMENT, AND REAGENTS Flashcards
The metric system unit of volume is a:
a. Meter
b. Gram
c. Liter
d. Micron
c. Liter
The metric system unit of length is a:
a. Meter
b. Gram
c. Liter
d. Pound
a. Meter
The metric unit of mass is a:
a. Meter
b. Gram
c. Liter
d. Angstrom
b. Gram
Convert: 20°C=___ °F
a. 25
b. 53
c. 68
d. 86
c. 68
Convert: 75°F=___°C
a. 15.5
b. 21.0
c. 23.8
d. 32.6
c. 23.8
The prefix milli represents:
a. 10^−2
b. 10^−3
c. 10^−6
d. 10^−9
b. 10^−3
The prefix micro represents:
a. 10^−2
b. 10^−3
c. 10^−6
d. 10^−9
c. 10^−6
The primary use of a 1-mL volumetric pipette is to:
a. Prepare a reagent of specific total volume
b. Measure an unknown serum sample
c. Add a reagent to a reaction tube
d. Measure an approximate amount of control specimen
b. Measure an unknown serum sample
The primary use of a 10-mL graduated pipette is to:
a. Prepare a reagent of specific total volume
b. Measure an unknown serum sample
c. Add a reagent to a reaction tube
d. Measure an approximate amount of control specimen
c. Add a reagent to a reaction tube
The primary use of a 100-mL volumetric flask is to:
a. Prepare a reagent of specific total volume
b. Measure an unknown serum sample
c. Add a reagent to a reaction tube
d. Measure an approximate amount of control specimen
a. Prepare a reagent of specific total volume
An etched ring on a to-deliver (TD) pipette indicates:
a. A small amount of fluid will remain in tip of pipette, and it is left to remain in the tip.
b. The drop remaining in the tip must be blown out.
c. Either a or b.
d. No significance.
b. The drop remaining in the tip must be blown out.
A cytocentrifuge is used to spread:
a. Liquid specimens evenly over a slide
b. Monolayers of cells
c. A large volume of specimen
d. Both a and b
d. Both a and b
The purest type of reagent water is:
a. Type I
b. Type II
c. Type III
d. All are equal
a. Type I
Water from which minerals have been removed and that meets the specifications for type II and type III water is called:
a. Distilled water
b. Deionized water
c. Reagent-grade water
d. Charcoal-activated water
a. Distilled water
Grades of chemicals include all the following grades except:
a. Analytical reagent
b. Chemically pure
c. Commercial grade
d. Industrial grade
d. Industrial grade
Reference standards are chemicals whose purity has been ensured by the:
a. National Institute of Standards and Technology
b. Centers for Disease Control and Prevention
c. Occupational Safety and Health Administration
d. State licensing agencies
a. National Institute of Standards and Technology
A solute is:
a. The substance dissolved in the solution
b. The substance that does the dissolving
c. Always water
d. Both b and c
a. The substance dissolved in the solution
A label for a reagent should bear:
a. Name and concentration of regent
b. Date prepared and expiration date
c. Initials of preparer
d. All the above
d. All the above
You need to complete a chemistry procedure that involves diluting 1.5mL of serum specimens to a 1:10 solution before performing testing. Which pipette is best suited for this task?
a. Volumetric
b. Serologic
c. Micropipette
d. Any of the above
c. Micropipette
You need to reconstitute quality control samples by adding 5mL of deionized water to lyophilized material. Which pipette is best suited for this task?
a. Volumetric
b. Serologic
c. Micropipette
d. Any of the above
a. Volumetric
You need to perform some testing in the serology department. Which pipette is suitable for use in this department, but not for other tasks (such as pipetting small amounts of blood or specimen, measuring standard solution)?
a. Volumetric
b. Serologic
c. Micropipette
d. Erlenmeyer
c. Micropipette
