Understanding Variables in Research
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Questions and Answers

What is the color of the colonies observable on the blood agar plates?

  • Red to orange
  • Black to brown
  • Grayish to yellowish (correct)
  • Pink to purple

What type of haemolysis is observed in the colonies on the blood agar plates?

  • Delta haemolytic
  • Gamma haemolytic
  • Alpha haemolytic (correct)
  • Beta haemolytic

What agar was used for the experimentations with oregano preparations after isolating the colonies?

  • MacConkey Agar
  • Sabouraud Dextrose Agar
  • Mueller Hinton Agar (correct)
  • Chocolate Agar

How were pure colonies acquired from the secondary and tertiary cultures?

<p>Using a disposable loop (C)</p> Signup and view all the answers

In which direction did the researcher streak the loop on the Mueller Hinton agar in the upper part of the plate?

<p>From left to right going downwards (B)</p> Signup and view all the answers

How did the researcher streak the loop towards the end part of the plate?

<p>On the side in a horizontal position going downwards (D)</p> Signup and view all the answers

In what motion did the researcher streak it again after stroking on different positions?

<p>In a circular motion (A)</p> Signup and view all the answers

Which technique did the researcher use to draw the loop from upwards to downwards?

<p>'Up and Down' technique (C)</p> Signup and view all the answers

What was done after streaking on the side of the plate on a diagonal position going downwards?

<p>'Wavy' streaking motion (D)</p> Signup and view all the answers

In what manner did the researcher streak it on the side of the plate on a horizontal position going downwards at its end part?

<p>With 'straight' strokes (D)</p> Signup and view all the answers

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