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Medical Microbiology (Basics) Quiz on Culture Media, created by gina_evans0312 on 01/26/2014.

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gina_evans0312
Created by gina_evans0312 about 10 years ago
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Culture Media

Culture Media

Question 1 of 7

1

Which of the following media is most enriched?

Select one of the following:

  • Nutrient Agar

  • Blood Agar

  • Chocolate Agar

Explanation

Question 2 of 7

1

Only nutrient agar allows the growth of fastidious bacteria

Select one of the following:

  • True
  • False

Explanation

Question 3 of 7

1

Name the two dyes used for gram staining

Select one or more of the following:

  • Crystal violet

  • Conicheal

  • Safranine

Explanation

Question 4 of 7

1

Iodine is used to darken the crystal violet

Select one of the following:

  • True
  • False

Explanation

Question 5 of 7

1

The Gram -ve bacteria lose dye when exposed to decoloriser

Select one of the following:

  • True
  • False

Explanation

Question 6 of 7

1

The peptidoglycan layer is sandwiched between two membranes- what bacteria am I describing?

Select one of the following:

  • Gram +ve

  • Gram -ve

Explanation

Question 7 of 7

1

Why, when streaking, do you take samples from each previous streak and sterilise inbetween?

Select one of the following:

  • To reduce the no of bacteria on the loop each time- eventually you'll be spreading single bacteria, which grow to colonies

  • I can't think of an answer that might fool you, so yeah, just leaving this...

Explanation

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