Bacteria

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Bacteria
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Bacteria Characteristics

• Tiny (10,000 could fit across fingernail)
• Prokaryote
• Heterotrophs or Autotrophs
• Unicellular
• Asexual Reproduction

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Bacteria Shapes

• Bacillus rod shaped
• Coccus spherical
• Spirillum spiral

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Bacterial Structure
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Endospores

• Thick walled structure surrounding chromosome and
  bit of cytoplasm
• Enables bacteria to survive harsh conditions

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Binary Fission

• Loop of DNA replicates
• Cell splits in half

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Differences Between Bacteria and Eukaryotes

• Bacteria
• No nucleus
• 1 micron diameter
• Unicellular
• Single circular loop of DNA
• Binary fission

• Eukaryotes
• Nucleus
• 10-400 microns diam.
• Some multicellular
• Linear DNA, integrated with protein
• Mitosis