Categorias: Todos - bacteria - pathogens - nitrogen - parasites

por Liz P 5 anos atrás

314

Prokaryotes

The text explores the diverse groups within the domains of Bacteria, Archaea, and Eukarya, highlighting their unique characteristics and ecological roles. In the Bacteria domain, various classes such as Proteobacteria, Spirochetes, Chlamydias, and Gram-positive bacteria are discussed, with specific references to their metabolic processes, habitats, and impacts on other organisms, including humans.

Prokaryotes

Types

Methanogens

- digestive tracts - decomposing materials in landfills - muck on standing water

Extremophiles

Extreme thermophiles
Extreme halophiles

Domain Eukarya

Ancestor

Domain Bacteria

Gram-positive bacteria
mycoplasms

smallest cells

pathogens

strptococcus

staphylococcus

Clostridium botulinum = botulism

obligate anerobe

Bacillus anthracis = anthrax

can come in form of powder as endospores

Actinomycetes

decomposes soil

Cyanobacteria: photoautotrophic
primary endosymbiosis in evolution of plants with chloroplasts that were cyanobacteria
sinks for CO2 in oceans
generate oxygen

anabaena

photoplankton

Oscillatoria (thread-like colony) individual shape is currently

Spirochetes: (spirili/helical) heterotrophs

Borrelia burgdorferi = Lyme disease

Treponema pallidum = syphullus

Chlamydias: chemoheterotrophs
parasitic

Chlamydia trachomatis

non-gonococcal urethritis when sexually transmitted

blindness

Proteobacteria (gram-negative): hetero, chemoauto, photauto, anerobic and aerobic
E. Coli

not usually harmful

found in intestine

Sulfer Bacteria

Pathogens

Vibrio cholerae

Salmonella

Legionella

Thiomargarita namibiensis

Agrobacterium

used for genetic engineering

tumors in plants

Rhizobium

nitrogen fixation for legumes (plants)

heterotroph

Domain Archaea

Nanoarchaeotes
Crenarchaeotes
Euryarchaeots
Korarchaeotes