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CHEMISTRY (MAM VAN) > PART 1 > Flashcards

PART 1 Flashcards

1
Q

Convert 1 L to mL

A

1,000

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2
Q

Convert 50 mL to L

A

0.05

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3
Q

Convert 5 dL to mL

A

500

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4
Q

A containers that is calibrated to hold only one exact volume of liquid?

A

Volumetric flask

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5
Q

a standards requires that SDSs are accessible to all employees who come in contact with a hazardous compound?

A

Hazardous Communication Standards

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6
Q

Chemical should be stored

A

According to their chemical properties and classification

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7
Q

Proper personal protection equipment (PPE) in the chemistry laboratory for ROUTINE testing

A

Impermeable lab coat with gloves

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8
Q

A fire caused by a flammable liquid should be extinguished by using which type of extinguisher?

A

Class B

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9
Q

A proper means of disposal for the type of waste?

A

Microbiologic waste by steam sterilization

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10
Q

examples of NONIONIZING RADIATION?

A

Ultraviolet light and microwaves

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11
Q

10 6th

A

MEGA

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12
Q

The prefix which means 10 -9 is

A

NANO

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13
Q

Concentration expressed as the amount of solute per 100 parts of sol

A

Percent solution

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14
Q

Indication of relative concentration:

A

Dilution

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15
Q

molarity of a solution that contains 18.7 grams of KCl in 500 mL (MW 74.5)?

A

M = 18.7 g / (74.5)(0.5L) = 0.5 M

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16
Q

How much 95% v/v alcohol is required to prepare 5L of 70% v/v alcohol?

A

C1V1 = C2V2
V1 = (70)(5L) / 95 = 3.7 L

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17
Q

Convert 72 Fahrenheit to its Celsius equivalent:

A

C = 5/9 (F - 32) = 5/9 (72 - 32) = 22.2C

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18
Q

Convert 100 Celsius to its Kelvin equivalent:

A

K = C + 273.15 = 100 + 273.15 = 373.15K

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19
Q

Most basic pipette:

A

Glass pipette

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20
Q

ROUTINELY USED Pipette

A

automatic pipette

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21
Q

Does not have graduations to the tip

A

Mohr pipet

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22
Q

Pipets are used with biologic fluids having a viscosity greater than that of water:

A

Ostwald-Folin pipets

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23
Q

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 pipets

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24
Q

ipette with cylindrical glass bulb near the CENTER of the pipette that helps to distinguish them from other types of transfer pipettes.

A

Volumetric pipette

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25
Q

Extremely inert, excellent temperature tolerance and chemical resistance; used for stir bars, stopcocks and tubing:

A

Teflon

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26
Q

Widely used in plastic ware, too, including test tubes, bottles, graduated tubes, stoppers,
disposable transfer pipets, volumetric pipets, and test tube racks. May bind or absorb proteins, dyes, stains, and picric acid

A

POLYETHYLENE

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27
Q

Used in tubes for centrifugation, graduated cylinders, a
Very strong plastic but is not suitable for use with strong acids, bases, and oxidizing
agents
May be autoclaved but with limitations

A

POLYCARBONATE

28
Q

Rigid, clear type of plastic that should not be autoclaved
Used in an assortment of tubes, including capped graduated tubes and test tubes Not resistant to most hydrocarbons, ketones, and alcohols

A

POLYSTYRENE

29
Q

Horizontal-head centrifuge:

A

Swinging bucket centrifuge

30
Q

It is used when rapid centrifugation of solutions containing small particles is needed; an example is the microhematocrit centrifuge:

A

Fixed-angle head centrifuge

31
Q

High-speed centrifuges used to separate layers of different specific gravities, commonly used to separate lipoproteins:

A

Ultracentrifuge

32
Q

Uses a very high-torque and low-inertia motor to spread MONOLAYER OF CELLS rapidly across a special slide for critical morphologic studies:

A

Cytocentrifuge

33
Q

The speed of the centrifuge should be checked every 3 months with:

A

Tachometer

34
Q

Calibration of centrifuges is customarily performed every ______.

A

Every 3 months (quarterly)

35
Q

Centrifuges are routinely disinfected on a ___ basis.

A

weekly

36
Q

HIGHLY PURIFIED SUBSTANCES of a known composition:

A

Standard

37
Q

It represents a specimen that is SIMILAR IN COMPOSITION TO THE PATIENT’S WHOLE BLOOD or plasma:

A

Control

38
Q

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

39
Q

The PUREST TYPE OF REAGENT WATER is:

A

Type I

40
Q

Chemicals that are used to manufacture drugs:

A

USP and NF chemical grade

41
Q

Basic unit for mass:

A

Kilogram

42
Q

Which of the following is NOT A COLLIGATIVE PROPERTY of solutions?

A

pH

43
Q

Most clinical microbiology laboratories are categorized at what biosafety level?

A

2

44
Q

Degree of hazard #2:

A

Moderate

45
Q

Degree of hazard 4:

A

Extreme

46
Q

Degree of hazard 3:

A

Serious

47
Q

Degree of hazard 1:

A

Slight

48
Q

Electrical equipment fire:

A

Class C

49
Q

combustible/reactive metals, such as magnesium, sodium, and potassium

A

Class D

50
Q

Flammable liquids/gases and combustible petroleum products

A

Class B

51
Q

Ordinary combustible solid materials, such as paper, wood, plastic, and fabric

A

Class A

52
Q

Ordinary combustible solid materials, such as paper, wood, plastic, and fabric

A

Class A

53
Q

Type of extinguisher for CLASS A FIRES

A
  1. Pressurized water 2. Dry chemical
54
Q

Repetitive strain disorders such as tenosynovitis, bursitis, and ganglion

A

Ergonomic hazards

55
Q

The first step to take when attempting to repair electronic equipment is to

A

Turn instrument off and unplug it

56
Q

Most common source of light for work in the visible and near-infrared regions

A

Incandescent tungsten or tungsten-iodide lamp

57
Q

The lamps most commonly used for ultraviolet (UV) work are:

A

Deuterium discharge lamp and mercury arc lamp

58
Q

Which is the most sensitive detector for spectrophotometry?

A

Photomultiplier

59
Q

Reflectance spectrometry uses

A

Tungsten–halogen lamp

60
Q

a light sources is used in atomic absorption spectrophotometry?

A

Hollow-cathode lamp

61
Q

used to measure concentration of LARGE PARTICLES:

A
  1. Nephelometry
  2. Turbidimetry
62
Q

temperature is _______ proportional to fluorescence.

A

Inversely proportional

63
Q

Low temperature:

Increase in fluorescence
or Decrease influorescence

A

Increase in fluorescence

64
Q

Instruments is used in the clinical laboratories to detect beta and gamma emissions?

A

Scintillation counter

65
Q

Liquids (reagents, diluents, and samples) are pumped through a system of [continuous] tubing:

A

Continuous flow analysis

66
Q

Checking instrument calibration, temperature accuracy, and electronic parameters are part of:

A

Function verification

CHEMISTRY (MAM VAN) (7 decks)

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