Agar Medium and Organism Storage Quiz
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Questions and Answers

Why is a medium prepared from natural components preferable for storing organisms on agar?

  • It selects for a wider range of organisms (correct)
  • It is easier to prepare
  • It prevents early microbial death
  • It is more cost-effective

    • What precaution should be taken if glucose is used in the medium for lactic bacteria?

  • Increase the concentration of glucose
  • Lower the storage temperature
  • Add more natural components to the medium
  • Buffer the medium with calcium carbonate (correct)

    • Why is storage on agar popular despite its shortcomings?

  • It is more cost-effective than other methods
  • It prevents microbial death more effectively
  • It allows for longer storage periods
  • It is the most widely used method (correct)

    • What is the temperature range for preservation in deep freezers mentioned in the text?

    <p>-20°C to -80°C</p> Signup and view all the answers

    Why is it important to avoid a stock culture medium rich in carbohydrates such as glucose?

    <p>To prevent early microbial death</p> Signup and view all the answers

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