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Microbiology Lab Final > General Lab Info > Flashcards

General Lab Info Flashcards

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1
Q

Increase or Decreases as you rotate through the objective lenses

Magnification

A

Increases

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2
Q

Increase or Decreases as you rotate through the objective lenses

Resolution

A

Increases

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3
Q

Increase or Decreases as you rotate through the objective lenses

Working Distance

A

Decreases

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4
Q

Increase or Decreases as you rotate through the objective lenses

Depth of Field

A

decreases

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5
Q

Increase or Decreases as you rotate through the objective lenses

Field of View

A

decreases

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6
Q

Increase or Decreases as you rotate through the objective lenses

Illumination

A

decreases

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7
Q

What function does oil serve when using oil immersion lens?

A

stops light from refracting as it leaves the slide

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8
Q

Describe function and appearance of cyanobacterial:

Photosynthetic cells

A

Smooth cytoplasm, green - oxygenic photosynthesis

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9
Q

Describe function and appearance of cyanobacterial:

Heterocysts

A

circular; nitrogen-fixation

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10
Q

Describe function and appearance of cyanobacterial:

Akinetes

A

irregular shaped, with nutrients stored in cytoplasm; storing nutrients

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11
Q

describe the structure of the cell wall of Gram positive bacteria

A

thick layer of peptidoglycan, negatively charged, lacks outer membrane

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12
Q

Describe the structure of the cell wall of Gram negative bacteria

A

thin layer of peptidoglycan, outer bilayer membrane, outer leaflet made of LPS, porins form channels through leaflets

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13
Q

Name two diseases caused by an endospore forming bacteria

A

Clostridium tetani (tetanus) - muscle spasms; Bacillus anthracis (anthrax) - release immunosuppressive toxin

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14
Q

Give two examples of acid-fast bacteria

A

Mycobacterium tuberculosis (tuberculosis) - primary: flu like, secondary: necrotic lung inflammation; Mycobacterium leprae (leprosy) - formation of granulomas, or severe disfigurement/loss of nerve function

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15
Q

Glycocalyx

A

external coating of bacterial cell, polysaccharides adn glycoproteins

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16
Q

capsule

A

glycocalyx that is not water soluble

17
Q

slime layer

A

glycocalyx that is water soluble

18
Q

bacteriostatic

A

inhibition but not complete destruction

19
Q

antimicrobial

A

any compound used to treat infectious disease

20
Q

bacteriocidal

A

kills bacteria

21
Q

ATCC

A

american type culture collection; guaranteed genetic strain

22
Q

antibiotic

A

antimicrobial that is produced naturally by an organism

Microbiology Lab Final (10 decks)

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