CC Assessment 1 Flashcards
Convert 1 L to mL
A. 100
B. 1,000
C. 10,000
D. 100,000
B. 1,000
Convert 50 mL to L
A. 0.5
B. 0.05
C. 5
D. 500
B. 0.05
Convert 5 dL to mL
A. 0.5
B. 50
C. 500
D. 5,000
C. 500
Which of the following containers is calibrated to hold only one exact volume of liquid?
A. Volumetric flask
B. Erlenmeyer flask
C. Griffin beaker
D. Graduated cylinder
A. Volumetric flask
Which of the following standards requires that SDSs are accessible to all employees who come in contact with a hazardous compound?
A. Hazard Communication Standard
B. Bloodborne Pathogen Standard
C. CDC Regulation
D. Personal Protection Equipment Standard
A. Hazard Communication Standard
Chemical should be stored:
A. According to their chemical properties and classification
B. Alphabetically, for easy accessibility
C. Inside a safety cabinet with proper ventilation
D. Inside a fume hood, if toxic vapors can be released when opened
A. According to their chemical properties and classification
Proper personal protection equipment (PPE) in the chemistry laboratory for ROUTINE testing includes:
A. Respirators with HEPA filter
B. Gloves with rubberized sleeves
C. Safety glasses for individuals not wearing contact lenses
D. Impermeable lab coat with gloves
D. Impermeable lab coat with gloves
A fire caused by a flammable liquid should be extinguished by using which type of extinguisher?
A. Halogen
B. Class B
C. Pressurized water
D. Class C
B. Class B
Which of the following is the proper means of disposal for the type of waste?
A. Xylene into the sewer system
B. Microbiologic waste by steam sterilization
C. Mercury by burial
D. Radioactive waste by incineration
B. Microbiologic waste by steam sterilization
Which of the following are examples of NONIONIZING RADIATION?
A. Ultraviolet light and microwaves
B. Gamma rays and x-rays
C. Alpha and beta radiation
D. Neutron radiation
A. Ultraviolet light and microwaves
10 6th
A. Kilo
B. Mega
C. Milli
D. Micro
B. Mega
The prefix which means 10 -9 is:
A. Micro
B. Milli
C. Nano
D. Pico
C. Nano
Concentration expressed as the amount of solute per 100 parts of solution:
A. Molarity
B. Normality
C. Percent solution
D. Ratio
C. Percent solution
Indication of relative concentration:
A. Dilution
B. Molarity
C. Normality
D. Ratio
A. Dilution
What is the molarity of a solution that contains 18.7 grams of KCl in 500 mL (MW 74.5)?
A. 0.1
B. 0.5
C. 1.0
D. 5.0
B. 0.5
M = 18.7 g / (74.5)(0.5L) = 0.5 M
How much 95% v/v alcohol is required to prepare 5L of 70% v/v alcohol?
A. 2.4 L
B. 3.5 L
C. 3.7 L
D. 4.4 L
C. 3.7 L
C1V1 = C2V2
V1 = (70)(5L) / 95 = 3.7 L
A colorimetric method calls for the use of 0.1 mL serum, 5 mL of the reagent and 4.9 mL of water. What is the dilution of the serum in the final solution?
A. 1 to 5
B. 1 to 10
C. 1 to 50
D. 1 to 100
D. 1 to 100
Amount of serum: 0.1 mL
Total volume: 10 mL
Dilution: 0.1:10 or 1:100
Convert 72 Fahrenheit to its Celsius equivalent:
A. 12.2C
B. 22.2C
C. 40.2C
D. 44.4C
B. 22.2C
C = 5/9 (F - 32)
= 5/9 (72 - 32)
= 22.2C
Convert 100 Celsius to its Kelvin equivalent:
A. 73.15K
B. 173.15K
C. 273.15K
D. 373.15K
D. 373.15K
K = C + 273.15
= 100 + 273.15
= 373.15K
Most basic pipette:
A. Automatic pipette
B. Glass pipette
B. Glass pipette
ROUTINELY USED: automatic pipette
MOST BASIC: glass pipette
Does not have graduations to the tip:
A. Mohr pipet
B. Serologic pipet
C. Micropipet
D. None of these
A. Mohr pipet
Pipets are used with biologic fluids having a viscosity greater than that of water:
A. Mohr pipets
B. Ostwald-Folin pipets
C. Pasteur pipets
D. Volumeteric pipets
B. Ostwald-Folin pipets
Pipette with BULB CLOSER TO THE DELIVERY TIP and are used for accurate measurement of VISCOUS FLUIDS, such as blood or serum:
A. Ostwald-Folin pipette
B. Volumetric pipette
A. Ostwald-Folin pipette
Pipette with cylindrical glass bulb near the CENTER of the pipette that helps to distinguish them from other types of transfer pipettes.
A. Ostwald-Folin pipette
B. Volumetric pipette
B. Volumetric pipette
Extremely inert, excellent temperature tolerance and chemical resistance; used for stir bars, stopcocks and tubing:
A. Polyethylene
B. Polycarbonate
C. Polystyrene
D. Teflon
D. Teflon
Horizontal-head centrifuge:
A. Cytocentrifuge
B. Fixed-angle head centrifuge
C. Swinging bucket centrifuge
D. Ultracentifuge
C. Swinging bucket centrifuge
It is used when rapid centrifugation of solutions containing small particles is needed; an example is the microhematocrit centrifuge:
A. Horizontal-head centrifuge
B. Fixed-angle head centrifuge
C. Ultracentrifuge
D. Cytocentrifuge
B. Fixed-angle head centrifuge
High-speed centrifuges used to separate layers of different specific gravities, commonly used to separate lipoproteins:
A. Horizontal-head centrifuge
B. Fixed-angle head centrifuge
C. Ultracentrifuge
D. Cytocentrifuge
C. Ultracentrifuge
Uses a very high-torque and low-inertia motor to spread MONOLAYER OF CELLS rapidly across a special slide for critical morphologic studies:
A. Horizontal-head centrifuge
B. Fixed-angle head centrifuge
C. Ultracentrifuge
D. Cytocentrifuge
D. Cytocentrifuge
The speed of the centrifuge should be checked every 3 months with:
A. Tachometer
B. Wiper
C. Potentiometer
D. Ergometer
A. Tachometer
Calibration of centrifuges is customarily performed every ______.
A. Daily
B. Weekly
C. Every 3 months (quarterly)
D. Yearly
C. Every 3 months (quarterly)
Centrifuges are routinely disinfected on a ___ basis.
A. Daily
B. Weekly
C. Monthly
D. Quarterly
B. Weekly
HIGHLY PURIFIED SUBSTANCES of a known composition:
A. Control
B. Standard
B. Standard
It represents a specimen that is SIMILAR IN COMPOSITION TO THE PATIENT’S WHOLE BLOOD or plasma:
A. Control
B. Standard
A. Control
Water produced using either an anion or a cation EXCHANGE RESIN, followed by replacement of the removed ions with hydroxyl or hydrogen ions.
A. Deionized water
B. Distilled water
C. RO water
A. Deionized water
The PUREST TYPE OF REAGENT WATER is:
A. Type I
B. Type II
C. Type III
D. All are equal
A. Type I
Chemicals that are used to manufacture drugs:
A. Technical or commercial grade
B. Analytical grade
C. Ultrapure grade
D. USP and NF chemical grade
D. USP and NF chemical grade
Basic unit for mass:
A. Gram
B. Kilogram
C. Mole
D. Pound
B. Kilogram
Which of the following is NOT A COLLIGATIVE PROPERTY of solutions?
A. pH
B. Freezing point
C. Osmotic pressure
D. Vapor pressure
A. pH
Most clinical microbiology laboratories are categorized at what biosafety level?
A. 1
B. 2
C. 3
D. 4
B. 2
Degree of hazard #2:
A. Slight
B. Moderate
C. Serious
D. Extreme
B. Moderate
Electrical equipment fire:
A. Class A
B. Class B
C. Class C
D. Class D
C. Class C
Type of extinguisher for CLASS A FIRES: 1. Pressurized water 2. Dry chemical 3. Carbon dioxide 4. Halon
A. 1 and 2
B. 1 and 3
C. 1, 2 and 3
D. Only 1
A. 1 and 2
All of the following are CRYOGENIC MATERIALS HAZARDS, EXCEPT:
A. Asphyxiation
B. Fire or explosion
C. Shock
D. Tissue damage similar to thermal burns
C. Shock
Repetitive strain disorders such as tenosynovitis, bursitis, and ganglion cysts:
A. Cryogenic materials hazards
B. Electrical hazards
C. Ergonomic hazards
D. Mechanical hazards
C. Ergonomic hazards
The first step to take when attempting to repair electronic equipment is to:
A. Check all electronic connections
B. Turn instrument off and unplug it
C. Reset all the printed circuit boards
D. Review instrument manual
B. Turn instrument off and unplug it
When a person is receiving an electrical shock, all of the following should be done
A. Pull the person away from the electrical source
B. Turn off the circuit breaker
C. Move the electrical source using a glass object
D. Move the electrical source using a wood object
A. Pull the person away from the electrical source
Most common source of light for work in the visible and near-infrared regions:
A. Deuterium discharge lamp and mercury arc lamp
B. Incandescent tungsten or tungsten-iodide lamp
B. Incandescent tungsten or tungsten-iodide lamp
The lamps most commonly used for ultraviolet (UV) work are:
A. Deuterium discharge lamp and mercury arc lamp
B. Incandescent tungsten or tungsten-iodide lamp
A. Deuterium discharge lamp and mercury arc lamp
Which is the most sensitive detector for spectrophotometry?
A. Photomultiplier
B. Phototube
C. Electron multiplier
D. Photodiode array
A. Photomultiplier
Reflectance spectrometry uses which of the following?
A. Luminometer
B. Tungsten–halogen lamp
C. Photomultiplier tube
D. UV lamp
E. Thermometer to monitor temperature in reaction
B. Tungsten–halogen lamp
Which of the following light sources is used in atomic absorption spectrophotometry?
A. Hollow-cathode lamp
B. Xenon arc lamp
C. Tungsten light
D. Deuterium lamp
E. Laser
A. Hollow-cathode lamp
Used to measure concentration of LARGE PARTICLES: 1. Nephelometry 2. Turbidimetry 3. Absorption spectroscopy
A. 1 only
B. 2 only
C. 1 and 2
D. 1, 2 and 3
C. 1 and 2
Temperature is _______ proportional to fluorescence.
A. Directly proportional
B. Inversely proportional
C. No effect
B. Inversely proportional
Low temperature:
A. Increase in fluorescence
B. Decrease in fluorescence
A. Increase in fluorescence
Which of the following techniques measures light scattered and has a light source placed at 90 degrees from the incident light?
A. Chemiluminescence
B. Atomic absorption spectrophotometry
C. Nephelometry
D. Turbidimetry
C. Nephelometry
Which of the following instruments is used in the clinical laboratories to detect beta and gamma emissions?
A. Fluorometer
B. Nephelometer
C. Scintillation counter
D. Spectrophotometer
C. Scintillation counter
Liquids (reagents, diluents, and samples) are pumped through a system of [continuous] tubing:
A. Continuous flow analysis
B. Centrifugal analysis
C. Discrete analysis
D. None of these
A. Continuous flow analysis
Which of the following types of analyzers offers RANDOM-ACCESS CAPABILITIES?
A. Discrete analyzers
B. Continuous-flow analyzers
C. Centrifugal analyzers
D. None of these
A. Discrete analyzers
Checking instrument calibration, temperature accuracy, and electronic parameters are part of:
A. Preventive maintenace
B. Quality control
C. Function verification
D. Precision verification
C. Function verification
