How do Bacteria Divide?

• What is binary vision primarily about?

  Binary vision is about binary fission in bacteria
• What is binary fission?

  It is how prokaryotic organisms divide and reproduce
• How does binary fission differ from mitosis and meiosis?

  Binary fission occurs in prokaryotic cells
• Which organisms primarily use binary fission?

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

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

  They contain non-essential genes
• Why is binary fission considered a type of reproduction?

  It results in the formation of two organisms
• What is a flagellum in bacteria?

  A tail used for movement
• What does a bacterial cell replicate before division?

  Its large circular strand of DNA and plasmids
• What must happen before a bacterial cell can divide?

  It must grow and replicate its genetic material
• How quickly can some bacteria divide under optimal conditions?

  Once every 20 minutes
• How do the large circular strands of DNA move during binary fission?

  They move to opposite sides of the cell
• What happens after the DNA is replicated in binary fission?

  A new cell wall grows down the middle
• How many bacteria would result from one cell doubling every 20 minutes for five hours?

  Over 250,000 bacteria
• What is the result of bacterial population doubling?

  The population grows exponentially
• How do you calculate the number of bacterial cells after a certain time?

  Use the formula: initial cells × 2^n
• What does mean division time refer to?

  Average time it takes for a cell to divide
• How many division cycles occur in three hours if the mean division time is 30 minutes?

  Six division cycles
• How many cells are produced after three hours from one bacterial cell with a mean division time of 30 minutes?

  64 cells
• What factors affect the mean division time of bacteria?

  Species and environmental conditions
• How many division cycles occur in four hours if the division time is 20 minutes?

  12 division cycles
• How many cells will there be after four hours from 1,000 bacteria dividing every 20 minutes?

  4,096,000 cells
• What are the optimal conditions for bacterial growth?

  • Warm temperature
  • Moist environment
  • Plenty of nutrients
• What are the steps involved in binary fission?

  1. Bacterial cell grows larger
  2. Replicates its DNA and plasmids
  3. DNA strands move to opposite sides
  4. New cell wall forms down the middle
  5. Cell divides into two new cells
• What is the significance of binary fission in bacteria?

  • It allows rapid population growth
  • It is a method of asexual reproduction
  • It is essential for survival and colonization