Viruses

• Binary fission of prokaryotes

  1. DNA + plasmids replicate
  2. Cell elongates, DNA moves to opposite poles
  3. Cytoplasm begins to divide and new cell walls begin to form
  4. Cytoplasm divides to produce two daughter cells
• Virus replication

  1. Virus detects host cell by protein marker on membrane virus attaches using cell attachment proteins
  2. Virus injects genetic material
  3. Cell reproduces genetic material and reads it creating new viral proteins
  4. Virus leaves cell using cells own membrane to form itself
• Viruses

  • Neither prokaryotic or Eukaryotic
  • Acellular non living
  • x1000 smaller than bacteria
  • Consists of genetic material (RNA) protected by protein coat (capsid) or in a lipid envelope