Microbial classification Flashcards
4 general classes of microorgs.
- bacteria
- virus
- fungi
- parasites
what can be seen with what
light microscope for everything but viruses, some fungi and parasites with naked eye
features of a bacteria
- single celled
- prokaryote
- strong wall of proteoglycan
- no membrane bound organelles or nucleus
3 basic divisions of bact
- gram stain
- aerobic/anaerobic - tolerance of O2
- shape
features of pos and neg gram stain
pos - has thick cell wall
neg - thin call and extra layer of membrane
2 basic shapes of bact.
- cocci
2. bacilli - rods
2 types of cocci
- chains
2. clusters
4 types of aerobes
- strict aerobes - depend on aerobic resp
- facultative aerobes - can use both
- mircoaerophilic - depend on aerobic resp., but killed by too much O2
- aerotolerant - uses anaerobic resp, but can tolerate O2
one type of anaerobe
strict - uses anaerobic resp and killed by O2
4 types of atypical bact
- intracellular
- lack rigid cell wall
- acid-fast
- spirochetes
3 Gram+ O2 Cocci
- staphylococcus
- streptococcus
- enterococcus
2 Gram+ O2 bacilli
- cornybacterium
2. bacillus
1 Gram+ anO2 bacilli
clostridium
2 Gram- O2 Cocci
- neisseria
2. haemophilius
1 gram- O2 bacilla
E coli
1 gram-, anO2, bacilli
bacteroides
def. virus
acellular DNA surrounded by a protein coat (capsid)
main division of viruses
DAN vs. RNA
subdiv. of viruses
- single/double stranded
- envelope
- capsid shape
2 DNA viruses
- Hep B
2. Herpes
5 RNA viruses
- Hep ACE
- Flu
- HIV
- Rotavirus
- Norovirus
def. fungi
eukaryotic uni and multicellular org with walls made of chitin and produce sexually or asexually
2 main classes of fungus
- yeast
2. filamentous
def. parasites
eukaryotic uni-multucellular orgs that live within another org,
2 main classes of parasites
- protozoa
2. helminths
