Bacterial Division (T)

• What process do bacteria use to multiply?

  Binary fission
• Why is it important to learn the equation for calculating the number of bacteria?

  Because it is not given in the exam
• What are the conditions necessary for bacteria to divide rapidly?

  • Sufficient nutrients
  • Suitable temperature
• How do you calculate the number of bacteria after a certain time?

  By using the equation $2^n$
• How many rounds of division occur in three hours if bacteria divide every 20 minutes?

  9 rounds of division
• What is the formula to calculate the number of bacteria after a certain number of divisions?

  The formula is $2^n,$ where $n$ is the number of rounds of division.
• How do you express the number of bacteria in standard form?

  • Identify the first digit
  • Count the number of digits after the first digit
  • Express as $a \times 10^n,$ where $a$ is the first digit followed by the decimal and $n$ is the number of digits counted
• If a bacterium divides every 20 minutes, how many bacteria are present after eight hours?

  16,777,216 bacteria
• How do you convert 16,777,216 into standard form?

  1.678 × 10^7
• What is the maximum number of bacteria present after eight hours under ideal conditions?

  16,777,216 bacteria