microbiology ch 12 ( lactobacilli, cornybacteria, and propionibacteria) Flashcards Preview

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Flashcards in microbiology ch 12 ( lactobacilli, cornybacteria, and propionibacteria) Deck (8)
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1

Lactobacilli

love low ph ( aciduric), oral cavity and human vagina, alpha or non haemolytic, ferment carbohydrates to make acid, grow at ph 6,

2

2 main groups of lactobacilli

homofermentors- produce lactiv acid
heterofermentors- produce lactic acid, acetate, ethanol and CO2

3

Corynebacteria diptheria

human throat, nose, sometimes skin, cell wall contains mycolic acid, Divide via snapping fission,

4

corynebacteria diptheria's tox gene

subunit A- adenosine diphosphate ribosylating function
subunit B- binds toxin to cell surface receptors

5

c. diptherias toxins

exotoxin which results in grey psuedomembrane that may obstruct airway. It affects motor nerves of myocardium and nervous system

6

what converts the toxin to a toxoid?

formaldehyde , a toxoid is non toxic but still antigentic

7

what test is ran to see if the diptheria has the exotoxin?

elek plate test

8

propionibacteria

is a diptheroid ( like diptheria)