Bacteria
unicellular prokaryotes 2 Domains Achaea Classification unicellular prokaryotes 2 Domains Achaea Kingdom Archaebacteria (ancient) found in marshes, swamps, hot sulfur springs, Great Salt Lake, deep ocean vents Bacteria Kingdom Eubacteria (true) found in almost any habitat Bacteria
Kingdom Archaebacteria cell walls without peptidoglycan (carbohydrate) Classification Kingdom Archaebacteria cell walls without peptidoglycan (carbohydrate) autotrophic or heterotrophic live anaerobically live in harsh environments (great salt lakes, hot springs) ex: Methanogens (in digestive tract of animals), Halophiles (salt-loving) Bacteria
Kingdom Archaebacteria cell walls without peptidoglycan (carbohydrate) Classification Kingdom Archaebacteria cell walls without peptidoglycan (carbohydrate) Bacteria
Kingdom Archaebacteria Classification Kingdom Archaebacteria live in harsh environments (great salt lakes, hot springs) Bacteria
cell wall contains peptidoglycan (carbohydrate) Classification Kingdom Eubacteria cell wall contains peptidoglycan (carbohydrate) autotrophic or heterotrophic free living (ponds, streams, on dead organisms) or deadly parasites ex: streptococcus, Escherichia coli, anabaena Bacteria
ex: streptococcus, Escherichia coli, anabaena Classification Kingdom Eubacteria ex: streptococcus, Escherichia coli, anabaena Bacteria
Cell structure cell wall nucleic acid capsule flagella pili ribosomes plasmid Bacteria
Cell structure endospore tough protein coat formed inside cell; used to survive harsh conditions Bacteria
bacteria are classified according to: shape arrangement Classifying Bacteria bacteria are classified according to: shape arrangement staining properties Bacteria
Classifying Bacteria shape spherical rod spiral coccus/cocci bacillus/bacilli spiral spirillum/spirilli Bacteria
Classifying Bacteria arrangement pairs clusters chains diplo… staphlo… strepto… Bacteria
Classifying Bacteria arrangement Bacteria
thin layer of peptidoglycan stains pink gram stain positive Classifying Bacteria staining properties gram stain negative thin layer of peptidoglycan stains pink gram stain positive thick layer of peptidoglycan stains purple Bacteria
ex: staphylococcus aureus saprophytic Life processes nutrition heterotrophs parasitic ex: staphylococcus aureus saprophytic Bacteria
photosynthetic autotrophs energy from sunlight ex: anabaena Life processes nutrition photosynthetic autotrophs energy from sunlight ex: anabaena Bacteria
chemosynthetic autotrophs energy from chemicals ex: Nitrobacteria Life processes nutrition chemosynthetic autotrophs energy from chemicals ex: Nitrobacteria Bacteria
can not live in presence of O2 ex: botulism facultative anaerobes Life processes respiration obligate aerobes require O2 to live ex: tuberculosis obligate anaerobes can not live in presence of O2 ex: botulism facultative anaerobes lives with or without O2 ex: E. Coli Bacteria
split in two (asexual reproduction) Life processes reproduction binary fission split in two (asexual reproduction) Bacteria
Life processes reproduction conjugation transfer of genetic material to an acceptor bacterium sexual Bacteria
buds form and produce new cells Life processes reproduction spores buds form and produce new cells spores can survive a long time before “hatching” Anthrax spores Bacteria
Advantages of bacteria human intestine food production- milk, buttermilk, yogurt, sour cream, cheese ecology decomposers nitrogen fixation producers Bacteria
Disadvantages of bacteria diseases
Disadvantages of bacteria diseases most bacteria affect host be producing toxins endotoxin toxic substance bound to cell wall exotoxin secreted substance toxic treatment antibiotics medication used to help kill or assist immune system in destruction of bacteria Bacteria