17 - Soil

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6 Terms

1
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<p>What is PCA and what is it used for?</p>

What is PCA and what is it used for?

  • plate count agar

  • supports bacterial growth

<ul><li><p>plate count agar</p></li><li><p>supports bacterial growth</p></li></ul><p></p>
2
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<p>What is SAB and what is it used for?</p>

What is SAB and what is it used for?

  • sabourauds agar

  • encourages growth of fungi due to slightly acidic pH and high sugar content

<ul><li><p>sabourauds agar</p></li><li><p>encourages growth of fungi due to slightly acidic pH and high sugar content</p></li></ul><p></p>
3
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<p>What is ACT and what is it used for?</p>

What is ACT and what is it used for?

  • actidione glucose yeast extract agar

  • supports growth of actinomycetes

  • actidione inhibits saprophytic fungi

<ul><li><p>actidione glucose yeast extract agar</p></li><li><p>supports growth of actinomycetes</p></li><li><p>actidione inhibits saprophytic fungi </p></li></ul><p></p>
4
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How do you calculate CFU/g?

avg # of colonies / (Dilution of tube * volume plated)

5
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What is the purpose of adding antibiotics to the SAB media?

inhibit growth of bacteria so fungi grow

6
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What gram stain reaction are all known endospore formers expected to give?

gram positive (purple)

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