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Virus and Bacteria

Virus and Bacteria. What are Microorganisms?. Cells. Prokaryotic Cells. Eukaryotic Cells. One or many celled organisms Nucleus with membrane Body cell. No Nucleus No membrane bound organelles Single celled: Archaea /bacteria. Characteristics of Bacteria. Prokaryotes

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Virus and Bacteria

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  1. Virus and Bacteria What are Microorganisms?

  2. Cells Prokaryotic Cells Eukaryotic Cells One or many celled organisms Nucleus with membrane Body cell • No Nucleus • No membrane bound organelles • Single celled: • Archaea/bacteria

  3. Characteristics of Bacteria • Prokaryotes • Many are consumers • Some are consumers , decomposers or producers • Single celled • Round, spiral or rod shaped

  4. How Bacteria reproduce Binary Fission • Step 1: genetic information is copied • Step 2: cell membrane begins to split • Step 3: new cell wall is formed • Step 4: Two identical bacteria cells are formed. • Asexual reproduction

  5. exchanging DNA Conjugation During conjugation a plasmid is transferred from one bacteria to another

  6. Characteristics Viruses • Non-living can not replicate on its own • Made of protein coat and genetic material • Protein coat gives virus its shape • Smaller than bacteria • Do Not perform any life functions • Can only replicate inside a cell

  7. Virus Replication

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