Binary fission

• What is binary vision?

  Process by which prokaryotic organisms divide
• How does binary fission differ from mitosis?

  Binary fission occurs in prokaryotic cells
• What type of organisms undergo binary fission?

  Prokaryotic organisms like bacteria
• What structures do bacterial cells have?

  Cell wall, cell membrane, cytoplasm, DNA
• What is the function of plasmids in bacteria?

  Contain non-essential genes
• What is a flagellum?

  A tail used for movement in some bacteria
• Why is binary fission considered a type of reproduction?

  It results in two new bacterial organisms
• What are the two main steps before binary fission occurs?

  Growth and replication of genetic material
• How often can some bacteria divide under optimal conditions?

  Every 20 minutes
• How does bacterial population growth occur during binary fission?

  The population doubles with each division
• How many bacteria are produced after five hours if they double every 20 minutes?

  Over 250,000 bacteria
• How many division cycles occur in three hours with a mean division time of 30 minutes?

  Six division cycles
• How many cells are produced after three hours from one bacterial cell?

  64 cells
• What does mean division time refer to?

  Average time it takes for a cell to divide
• What factors affect the mean division time of bacteria?

  Species of bacteria and environmental conditions
• How many division cycles occur in four hours with a division time of 20 minutes?

  12 division cycles
• How many cells are there after four hours starting with 1,000 bacteria?

  4,096,000 cells
• What is the process of binary fission in bacteria?

  1. Bacterial cell grows larger.
  2. Replicates its circular DNA and plasmids.
  3. DNA strands move to opposite sides.
  4. New cell wall forms down the middle.
  5. Cell divides into two new bacterial cells.
• What are the optimal conditions for bacterial growth?

  • Warm temperature
  • Moist environment
  • Plenty of nutrients