More categorizations Flashcards
what is an obligate aerobe
uses O2-dep system for ATP
examples of obligate aerobes (3)
- pseudomonas (GN bacillus)
- mycobacterium (acid-fast bacillus)
- nocardia (acid-fast branching)
“pseudomonas and acid-fast need to breathe”
what is an obligate anaerobe
susceptible to oxidative damage b/c they don’t have catalase and/or superoxide dismutase
which one smells? obligate anaerobes or aerobes? and why?
obligate anaerobes smell generally b/c they have short-chain FA’s
which one is difficult to culture?
obligate anaerobes
which one makes gas in tissue and which gases?
obligate anaerobes
CO2 and H2
examples of obligate anaerobes (3)
- clostridium (GP bacillus)
- bacteroides (GN bacillus)
- actinomyces (GP branching)
which abx are ineffective against obligate anaerobes?
why?
aminoglycosides
they need O2 to enter bacterial cell
what is an obligate intracellular organism?
ones that can’t make own ATP
examples of obligate intracellular organism (2)
- Rickettsiae
- Chlamydia
they like to stay inside b/c it’s Really Cold
examples of facultative intracellular organisms (8)
- salmonella (GN bacillus)
- neisseria (GN cocci)
- brucella (GN bacillus)
- mycobacterium (acid-fast bacillus)
- listeria (GP bacillus)
- francisella (GN bacillus)
- legionella (GN bacillus)
- yersinia pestis (GN bacillus)
“Some Nasty Bugs May Live For Long Years”
encapsulated organisms (7)
SHiNE SKiS
- Strep pneumo
- Haemophilus influenza B
- Neisseria
- E. Coli
- Salmonella
- Klebsiella pneumoniae
- Strep Group B (GBS)
what part of bacteria utilized for vaccinations
capsule
catalase + organisms (7)
cats go PLACESS
- pseudomonas
- listeria
- aspergillosis
- candida
- e. coli
- staph aureus
- serratia
Urease positive bugs (8)
Ur-Ace (urease) Can Hate Stupid PUNKS
- cryptococcus
- helicobacter pylori
- staph epidermidis
- proteus
- ureaplasma
- nocardia
- klebsiella
- staph saprophyticus
what organism has yellow sulfur pigment?
actinomyces israelli
what organism has yellow pigment
staph aureus
what has blue-green pigment?
pseumonas aeruginosa
aerugula is green
what has red pigment
serratia marcescens
four common virulence factors
- protein A
- IgA protease
- M protein
- capsule
how does protein A help bacteria
Binds Fc of IgG to prevent opsonization and phagocytosis
what organism has protein A
staph aureus
how does IgA protease work?
cleaves IgA to allow respiratory colonization
who has IgA protease (3)
- strep pneumo
- haemophilus flu B
- neisseria
how does M protein work?
helps to prevent phagocytosis
who has M protein?
GAS
