Bacterial Culture Plate Count Quiz

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Questions and Answers

How many colonies will plate E have?

  • 340,000
  • 3
  • 34 (correct)
  • 34,000

What is the volume of the original culture?

  • 1 ml (correct)
  • 100 ml
  • 0.1 ml
  • 8 ml

What is the volume of the culture in plate A?

  • 1 ml (correct)
  • 0.1 ml
  • 1 ml (correct)
  • 99 ml

What is the volume of the culture in plate B?

<p>1 ml (C)</p> Signup and view all the answers

What is the volume of the culture in plate F?

<p>0.1 ml (C)</p> Signup and view all the answers

What is the total volume of diluted culture used for inoculating plates A, B, D, and F?

<p>11 ml (A)</p> Signup and view all the answers

What is the dilution factor for the culture used to inoculate plate E?

<p>1:1000 (B)</p> Signup and view all the answers

If the original culture had a concentration of $10^6$ cells/ml, what is the approximate concentration of cells in the culture used to inoculate plate E?

<p>$10^3$ cells/ml (B)</p> Signup and view all the answers

If the original culture had a concentration of $10^6$ cells/ml, what is the approximate number of cells inoculated onto plate E?

<p>3400 (C)</p> Signup and view all the answers

Which of the following plates is expected to have the highest number of colonies?

<p>Plate F (A)</p> Signup and view all the answers

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Study Notes

Plate E Colony Count

  • Original culture: 1ml
  • Volume transferred to Plate E: 0.1ml
  • Total volume of Plate E: 100ml
  • To find the number of colonies on Plate E, calculate the dilution factor

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