LAB QUIZ 1 Flashcards

1
Q

In clinical setting, the fundamental objective is the _________ of potentially hazardous biological agents and toxins

A

containment

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2
Q

biological substances that pose a threat to the health of living organisms, especially humans.

A

biohazards

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3
Q

CDC MEANING

A

centers for disease control and prevention

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4
Q

biosafety level
1: minimum risk
2: tayo
3:
4: being extreme risk

A

TRUE

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5
Q

the pathogen capable of producing infection or infectious disease

A

agent

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6
Q

the host from which the pathogen originated

A

source

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7
Q

the process of how the pathogen infects the host

A

transmission

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8
Q

the organism where the pathogen infects

A

host

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9
Q

4 parts of infection chain

A

agent, source, transmission, host

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10
Q

bacteria and viruses that pose a MORE MINIMAL threat to human health

A

biohazard level 1

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11
Q

bacteria and viruses that CAUSE ONLY MILD disease in humans

A

biohazard level 2

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12
Q

bacteria and viruses that can cause severe to fatal disease in humans, but for which vaccines or other treatments EXIST

A

biohazard level 3

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13
Q

viruses that cause severe to fatal disease in humans, and for which NO VACCINES OR OTHER TREATMENTS ARE AVAILABLE

A

biohazard level 4

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14
Q

not known to consistently cause disease in healthy adult humans, and of MINIMAL potential hazard to laboratory personnel and the environment (ex: canine hepatitis, nom infectious bacteria)

A

BSL -1

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15
Q

moderate potential hazard to personnel and the environment. It includes bacteria and viruses that cause only mild disease to humans, or are difficult to contract via aerosol in lab settings (ex: hepatitis a,b,c, salmonella, influenza A)

A

BSL. -2

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16
Q

microbes there can be either indigenous or exotic, and they can also cause serious or potentially lethal disease through respiratory transmission (ex: HIV, H1n1, SARS, tubercolosis, rabies)

A

BSL -3

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17
Q

dangerous and exotic, posing a high risk of aerosol transmitted infections, infections caused by these microbes are frequently fatal and without treatment or vaccines (ex: ebola & smallpox)

A

BSL-4

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18
Q

certain procedures involving the creation of infectious ___________ must be conducted by personnel who are wearing protective clothing and equipment

A

aerosols or splashes

19
Q

a simple but effective way to prevent infection

A

proper hand washing

20
Q
  • hungarian physician/surgeon
  • observed lower rates in maternal mortality after introducing disinfecting hands with “chlorinated lime solution”
A

Ignaz Semmelweis

21
Q

how many seconds for handwashing?

A

20 seconds

22
Q

personal protective equipment

A

gloves, gowns, facemasks,faceshield, goggles/respirators

23
Q

history: 1674 “animalcules”

A

anton van leeuwenhoek

24
Q

deals with the study of microorganisms

A

microbiology

25
Q

require the aid of microscope to be visualized

A

microorganisms

26
Q

ability of the microscope to enlarge an image

A

magnification

27
Q
  • ability of the lens to distinguish TWO POINTS as clear and as distinct
  • the degree to which a microscope can distinguish fine details
A

resolution

28
Q

the part that is looked through at the top of the compound micros

A

eyepiece (OCULAR LENS)

29
Q
  • 3-5 optical lens objectives
  • 4x, 10x, 40x, 100x
A

objective lens

30
Q

the _____ of a compound microscope is calculated by multiplying the objective lens magnification by the eyepiece magnification legel

A

total magnification

31
Q

scanner

A

40x

32
Q

low power objective (LPO)

A

100x (10x)

33
Q

high power objective (HPO)

A

400x (40x)

34
Q

oil power objective (OIO)

A

1000x (100x)

35
Q

supports the microscope head and attaches it to the base

A

arm

36
Q

holds the objective lenses & attaches them to the microscope head. this part rotates to change which objective lens is active

A

nosepiece (resolving)

37
Q

bottom base of the microscope that houses the illumination & supports the compound microscope

A

base

38
Q
  • the platform upon which the specimen or slide are placed.
  • the height of the mechanical stage is adjustable on most compound microscope
A

stage or platform

39
Q

clips on the stage that holds the slide in place on the mechanical stage

A

stage clips

40
Q
  • control the amount of light received by the condenser
  • circular opening in the stage where the illumination from the base of the compound microscope reaches the platform of the stage.
A

iris diaphragm

41
Q

this lens condenser the light from the base illumination and focuses it onto the stage. it acts as a structural support that connects the stage to arm of frame of the microscope

A

condenser

42
Q

adjust the focus of the microscope . these knobs increase or decrease the level of detail seen when looking at the slide or specimen through the eyepiece of the compound microscope

A

coarse and fine adjustment

43
Q

carry the micros upright with ___

A

two hands