11A. Archaebacteria and Eubacteria share many characteristics but are classified into their own taxa Archaebacteria and Eubacteria share many characteristics.

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Presentation transcript:

11A

Archaebacteria and Eubacteria share many characteristics but are classified into their own taxa Archaebacteria and Eubacteria share many characteristics but are classified into their own taxa Features they both share: Features they both share: Prokaryotic Prokaryotic No membrane-bound nucleus No membrane-bound nucleus No organelles No organelles

Are non-pathogenic  they do NOT cause disease in other organisms that scientists know of Are non-pathogenic  they do NOT cause disease in other organisms that scientists know of Live in extreme environments Live in extreme environments Have some genes that are more similar with Eukaryotic organisms than Eubacteria species Have some genes that are more similar with Eukaryotic organisms than Eubacteria species ** Name change??? Archaebacteria  Eubacteria  Eukaryotic organisms F A L S E

More familiar with this group More familiar with this group Some are pathogenic  cause disease Some are pathogenic  cause disease MOST are decomposers MOST are decomposers Include cyanobacteria Include cyanobacteria

Bacteria are TINY!!!! Average length is 1 micrometer Bacteria are TINY!!!! Average length is 1 micrometer Bacteria reproduce through binary fission (simple mitosis) so that the offspring is genetically ____________ Bacteria reproduce through binary fission (simple mitosis) so that the offspring is genetically ____________ With the proper conditions (lots of food, right temp., right moisture, etc.) bacteria can reproduce every 20 MINUTES! With the proper conditions (lots of food, right temp., right moisture, etc.) bacteria can reproduce every 20 MINUTES! Sometimes bacteria will exchange DNA Sometimes bacteria will exchange DNA IDENTICAL

There are 3 basic shapes of bacteria: There are 3 basic shapes of bacteria: Spirillum – spiral shapedSpirillum – spiral shaped Coccus or Cocci (pl.) – circular or sphere likeCoccus or Cocci (pl.) – circular or sphere like Bacillus – rod shapedBacillus – rod shaped Bacteria have a tough cell wall Bacteria have a tough cell wall Some have a thick, sticky capsule that surrounds the cell wall Some have a thick, sticky capsule that surrounds the cell wall

Surprisingly, bacteria are actually more helpful than harmful: They decompose the HUGE amounts of waste on this planet They are used to produce foods Yogurt Pickles Cheeses Antibiotics Cyanobacteria that live in some plant roots enrich the soil with nitrogen