Prokaryotes Flashcards
Full array of microorganisms thet live on humans
Microbiome
Classification based in sequencing of proteins DNA rna
Prokaryote modern classification
Oldest organisms Simplest organisms Most abundant life forms No membrane or nucleus No cell compartments Includes domains bacteria and archaea
Prokaryote
Group of bacteria that produce oxygen and changed atmosphere from anoxic to oxygen rich
Cyanobacteria
Differences in Cell size Multicellulrity Chromosomes Organelles Reproduction
Differences between prokaryotes and eukaryotes
Used for movement in bacteria prokaryotes
Flagella
3 shapes of bacteria
Bacillus
Coccus
Spirillum
Horizontal transfer occurs through
Conjugation
Occurs when viruses package host DNA and transfer it upon infection
Transduction
Increases genetic diversity
Helps infer phylogeny
Occurs in bacteria
Produces large genetic change
Exchange of genetic material via horizontal transfer
Thick peptidoglycan wall
Will stain dark
Gram positive +
Contains lipopolysaccharides
Less peptidoglycan
Stains light
Gram negative -
Found in lower intestine of warm bodied animals
Helps host by producing vitamin k2
E. coli
Thick walled structures that contain chromosome & small amount of cytoplasm.
Formed in response to environmental stress
Endospores
Reproductive process that produces identical cells by simple splitting
Binary fission