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Foundations 5 > Bacterial Structure and Growth > Flashcards

Bacterial Structure and Growth Flashcards

1
Q

Main diff of euk and prok

A

Prokaryotes - no membrane bound organlles…70S ribosomes…binary fission…singular chromosome…no cytoskeleton and chemically ocmplex cell wall

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2
Q

Gram negative

A

LPS

Lipid A is portion of LPS that is main antigenic portion

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3
Q

Gram positive

A

Thick peptidoglycan layer with lipoteichoic acid and teichoic acid

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4
Q

Gram positive rod that is anaerobe

A

Clostridium

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5
Q

Gram positive rods

A

Listeria, bacillus, clostridium

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6
Q

Gram positive cocci catalase positive

A

Staph (clusters)

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7
Q

Gram positive cocci, catalase negative

A

Strep (chains)

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8
Q

Gram positive cocci, catalase positive, coagulase positive and negative

A

Positive - staph aureus

Negative - staph epidermidis

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9
Q

Gram positive cocci catalase negative hemolytic alpha/beta, gamma

A

Strep pneumoniae - alpha
Strep pyogenes, agalctiae - beta
Enterococcus - gamma

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10
Q

Gram positive cocci catalase negative hemolytic beta group A and B

A

Group A - strep pyogenes - bacitracin sensitive

Group B - strep agalctiae - bacitracin resistant

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11
Q

Gram negative cocci

A

N meningitidis and gonorrhoeae

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12
Q

Gram negative cocci maltose fermenter/non fermenter

A

Fermenter - meningitidis

Non - gonorrhoeae

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13
Q

Gram negative coccoid

A 
Heomophilus infuenzae (needs factors 5 and 10)
Bordetella pertussis
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14
Q

Gram negative rods lactose fermenters and non fermenters

A

Fermenters - klebsiella and E coli

Non - Shigella, salmonella, proteus, pseudomonoas

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15
Q

Gram negative rods non lactose fermenter oxidase negative and positive

A

negative - shigella, salmonella, proteus

Positive - pseudomonas

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16
Q

Bacterial capsules are

A

Usually polysaccharide

17
Q

Spirochetes

A

Helical shape, corkscrew

Treponema is example

18
Q

Obligate intracellular pathogens

A

Chlamydia and rickettsia

19
Q

No cell wall

A

Mycoplasma

20
Q

Mycobacteria

A

Cell wall of mycolic acid and lipoarabinomannan (need acid fast stain)

21
Q

Other name of acid fast stain and what is quality of mycolic acid

A

Ziehl- Neelsen stain

Very waxy

22
Q

Lag phase

A

Acquiring nutrients and preparing for growht

23
Q

Exponential phase

A

Actively dividing

24
Q

Stationary phase

A

Point at whih bacteria are using up nutrients present as fast they can be provided

25
Q

Death phase

A

Too many bacteria for the environment

26
Q

Selective media

A

Inhibits growht of a certain type

27
Q

Differential media

A

Supports growht of many bacteria and includes indicator

28
Q

Differential media of blood agar

A

Alpha - green is partial hemolysis
Beta - completely lyse and yellow
Gamma - clear and no hemolysis

Foundations 5 (13 decks)

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