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Bacteria

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HOT. EUBACTERIA. Found everywhere. Reproduction: asexual binary fission ... Rod shaped - bacilli. SPIRILLA- spiral shaped bacteria. Arrangement of Bacteria ... – PowerPoint PPT presentation

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Title: Bacteria


1
Bacteria
2
Compare Prokaryotic Cells and Eukaryotic Cells
  • Prokaryotic Cells
  • mostly unicellular organisms
  • No membrane organelles, no nucleus
  • Smaller than eukaryotes
  • Kingdoms Archaebacteria
  • Eubacteria
  • Eukaryotic Cells
  • Unicellular and multicellular organisms
  • Membrane organelles, has a nucleus
  • Cells larger than prokaryotes
  • Kingdoms Protista
  • Plantae
  • Animalia
  • Fungi

3
Archaebacteria
  • Live in extreme environments
  • Chemosynthetic

4
Examples of Archaebacteria
  • 1. Methanogens
  • 2. Extreme Halophiles
  • 3. Thermoacidophiles

5
Methanogens
  • Methanogens- convert hydrogen and carbon dioxide
    into methane gas
  • Anaerobic (doesnt require oxygen)
  • Chemosynthetic
  • Found in swamps, sewage plants, intestinal tract
    of humans and cows
  • Reproduction - asexual,
  • binary fission

6
Extreme Halophiles
  • Chemosynthetic use salt to make ATP
  • Habitat- extremely salty environment

7
SALTY
8
Thermoacidophiles
  • Live in acidic environment
  • high temperatures 110 degrees centigrade
  • pH less than 2

9
HOT
10
EUBACTERIA
  • Found everywhere
  • Reproduction asexual binary fission
  • Reproduction sexual - conjugation
  • Cell walls made of peptidoglycan

11
Shapes of Bacteria
  • Cocci-spherical shape

12
Rod shaped - bacilli
13
SPIRILLA- spiral shaped bacteria
14
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15
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16
Arrangement of Bacteria
  • Staphylo in grape-like clusters
  • ex staphylococcus
  • Strepto in chains
  • ex streptococcus
  • Diplo in 2
  • ex diplobacillus

17
Reproduction
  • Asexual Reproduction
  • One parent produces one or more identical
    offspring without fusion of gametes
  • - binary fission- bacteria
  • copies its chromosomes(1),
  • the cell grows, splits and is
  • genetically identical

18
Reproduction
  • Sexual Reproduction
  • - conjugation one bacteria transfers all or
    part of its chromosomes to another cell through a
    pilus (p. 490)
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