Microbes Flashcards
ACELLULAR MICROBES
Do not grow
no organic metabolicism
no independent reproduction
Cellular microbes
have cells
prokaryotic
eukaryotic
Types of acellular microbes
Virus
Viroid
satellite
prion
types of cellular microbes
Bacteria
Archea
Fungi
Protist
Helminths
Virus
Infectious agent in protein coat
Rna or DNA (ss,ds)
Possible lipid envelope
can infect all types of organisms
Viriods
small single-stranded circular rna
replicate in nucleus or chloroplasts
no protein coat
infect plants only
Prions
Abnormally folded protein
Mammals only
Satellites
nucleic acids with protein coat
cannot replicate on own; depends on helper virus
nucleic acid codes for protein coat
prpc
Functional prion
prpsc
Abnormally folded prion
causes diseases
Bacteria
single celled
free-living
prokaryotic
peptidoglycan cell wall
Circular chromosome
three characteristics of bacterial membrane
Ester bond
Bilayer
Hopanoids
Gram postive
Thick PGL
Teichonic and lipoteichoic acids
Gram negative
Thin pgl
lipopolysaccharide-cell membrane
Mycobacteria
Thin PGL
Mycolic acid layer
gram insensitive
Lipid soluble dye
Mycoplasma
No cell wall
lipoprotein membrane
resistant to antibiotics
Archaea
Similar to bacteria
prokaryote
have protein s layer
circular chromosome
no known pathogens
Survive in extreme enviroments
Archaea cell membrane
Ether-bond
bi or monolayer
Fungi
Eukaryotic
unicellular and multicellular
Chitin cell wall
Ester-linked fatty acids
Linear chromosome
Ascomycota
Yeasts or molds
sexual ascospores
Saprophytes
Pathogens
symbiotic
Basidiomycota
Fungi composed of hyphae
Basidiospores produced on club-like basidium
Upside umbrella fungi
Saprophytes and pathogens
Protists
Unicellular eukaryotes with complex structure and metabolic activities
No cell wall-algae
Free-living/parasitic
Linear
some multinucleate
Helminths
worm parasites
muticellular
animal
Linear