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Microbiology > Bacteria Unit > Flashcards

Bacteria Unit Flashcards

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Biology 101 flashcards
1
Q

The outer part of bacteria is called

A

Capsule

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2
Q

Long structure used for attachments of bacteria

A

Pili

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3
Q

Long structure used for movement on bacteria

A

Flagella

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4
Q

During which phase does cell growth equal cell death

A

Stationary

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5
Q

What are the nutrition sources for bacteria

A

Proteins minerals water and carbohydrates

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6
Q

What is a plasmid

A

A circular double stranded piece of DNA

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7
Q

What is binary fission

A

Process of asexual reproduction of bacteria

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8
Q

What method of bacterial resistance consists of bacteria actively exporting anti microbials out of there cell

A

Efflux

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9
Q

Which bacterial structure allows a bacteria to go dormant during inhospitable times, making them hard to kill during that phase

A

Endospore

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10
Q

Which is a flexible and inexpensive technique used to determine antimicrobial susceptibility

A

Kirby-Bauer disc diffusion

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11
Q

Which type of resistance in encoded in the bacteria DNA

A

Innate

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12
Q

What stain is best to detect Intracellular bacteria

A

Giemsa

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13
Q

MacConkeys agar encourages growth of which type of bacteria

A

Gram negative

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14
Q

Which biochemical test should be performed on all gram positive cocci

A

Catalase

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15
Q

Gram POS stains what color

A

Blue

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16
Q

Gram NEG stains what color

A

Red

17
Q

Describe the cell of gram POS bacteria

A

Thick cell wall that is composed mainly of peptidoglycan and teichoic acids

18
Q

Describe the cell structure of a gram NEG bacteria

A

More complex cell wall that consists of an outer membrane and a periplasmic space containing a comparatively small amount of peptidoglycan

19
Q

The only Endospore forming species are

A

Bacillus and clostridium

20
Q

Agar that supports the growth of organisms that show hemolytic patterns. Enrichment and differentiating media type

A

Blood AGAR

21
Q

What media AGAR type encourages growth of some organisms but suppresses the growth of others

A

Selective

22
Q

What media AGAR type causes observable change in medium when a particular biochemical reaction occurs

A

Differential

23
Q

What media AGAR type encourages growth of organisms without suppression of others

A

Enrichment

24
Q

What AGAR is selective for gram negative and differentiating

A

MacConkey

25
Q

What staining method categorizes bacteria

A

Gram stain

26
Q

What stain detects mycobacterium

A

Acid fast stain

27
Q

Biochemical testing performed on all gram positive cocci and small gram positive rods bacteria that have the enzyme can breakdown hydrogen peroxide into bubbles

A

Catalase

28
Q

Biochemical testing performed on all catalase, gram positive cocci. Bacteria that have this enzyme can trigger blood to clot

A

Coagulase

29
Q

Biochemical testing performed on all gram negative rods. Used to identify bacteria that have certain enzymes

A

Oxidase

30
Q

MacConkeys agar is

A

Selective and differential

31
Q

Bacteria need the right….

A

Nutrition
Temperature
O2 and CO2
Living location

32
Q

What is the lag phase of bacterial growth

A

The initial period of life, incubation

33
Q

What is the exponential phase of bacterial growth

A

When cells divide by binary fission, growth

34
Q

What is the stationary phase of bacterial growth

A

Growth ceases but cells remain metabolically active and happy

35
Q

What is the decline phase of bacterial growth

A

Bacteria die

36
Q

What is a broth dilution

A

Method for determination of the minimal inhibitory concentration and the minimal Bactericidal concentration of an antibiotic for a test bacterium

37
Q

Resistance chromosomally encoded in bacteria

A

Innate resistance

38
Q

Resistance from mutation or genetic transfer in bacteria

A

Acquired resistance

39
Q

Multiple drug resistance pathogens result in

A

Drug inactivation
Drug target modification
Decreased Intracellular accumulation

Microbiology (7 decks)

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