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Bacteria:. Classification and Structure. What are the 6 Kingdoms?. Archaebacteria Eubacteria Protists Fungi Plants Animals. Bacteria are prokaryotes. Pro – before Karyon – nucleus The simplest forms of life are prokaryotes. Earth’s first cells were prokaryotes. Lots of Them!.

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bacteria

Bacteria:

Classification and Structure

what are the 6 kingdoms
What are the 6 Kingdoms?
  • Archaebacteria
  • Eubacteria
  • Protists
  • Fungi
  • Plants
  • Animals
bacteria are prokaryotes
Bacteria are prokaryotes
  • Pro – before
  • Karyon – nucleus
  • The simplest forms of life are prokaryotes.
  • Earth’s first cells were prokaryotes.
lots of them
Lots of Them!
  • Prokaryotes are Earth’s most abundant life forms.
  • They can survive in many environments.
  • They can get energy from many different sources.
prokaryote review
Prokaryote Review
  • Mostly single-celled
  • No nucleus or organelles
  • Circular chromosomes
  • Cell walls
  • Reproduce mostly asexually
  • Anaerobic or aerobic
  • Heterotrophic or autotrophic
we are looking at the first two
We are looking at the first two
  • Archaebacteria
  • Eubacteria
classification of bacteria
Classification of Bacteria
  • Archaebacteria: extremists
  • Eubacteria:
    • Heterotrophs
    • Photosynthetic autotrophs
    • Chemosynthetic autotrophs
archaebacteria
Archaebacteria
  • Methane producers – anaerobic
  • Halophiles
    • Halo = salt
    • Philia = love
  • Thermophiles
    • Thermo = heat
archaebacteria1
Archaebacteria
  • Live in extreme locations:
    • Oxygen-free environments
    • Concentrated salt-water
    • Hot, acidic water
eubacteria
Eubacteria
  • Parasitic heterotrophs (Streptococcus)
  • Saprophages
    • Sapro = death
    • Phage = eat
  • Cyanobacteria (blue-green algae)
    • Photosynthetic
  • Chemosynthetic autotrophs (Rhizobium)
eubacteria heterotrophs
Eubacteria - Heterotrophs
  • Found everywhere
  • Parasites: live off of other organisms
  • Saprobes: live off of dead organisms or waste (recyclers)
eubacteria photosynthetic autotrophs
Eubacteria: Photosynthetic Autotrophs
  • Photosynthetic: make their own food from light
  • Cyanobacteria: blue-green, yellow, or red
  • ponds, streams, moist areas
eubacteria chemosynthetic autotrophs
Eubacteria: Chemosynthetic Autotrophs
  • Get energy by breaking down inorganic substances like sulfur and nitrogen
  • Make nitrogen in the air usable for plants {Very Important}
structure of bacteria
Structure of Bacteria
  • Two parts to Bacteria Structure:
    • Arrangement
    • Shape
arrangement
Arrangement
  • Paired: diplo
  • Grape-like clusters: staphylo
  • Chains: strepto
bacteria are named by shape
Bacteria are Named by Shape
  • Cocci (ball-shaped)
    • Streptococcus mutans
  • Bacillus (rod-shaped)
    • Clostridium botulinum
  • Spirilli (spiral-shaped)
    • Treponema palladium
shape
Shape
  • Rod: bacillus
  • Spheres: coccus
  • Spirals: spirillum
examples
Examples
  • Streptococcus: chains of spheres
  • Staphylospirillum: Grapelike clusters of spirals
  • Streptobacillus: Chains of rods
germ theory of disease
Germ Theory of Disease
  • Joseph Lister – Aseptic Techniques
  • Robert Koch – Germ Theory
    • A specific microorganism causes a specific disease
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