Culture Media

gina_evans0312
Quiz by gina_evans0312, updated more than 1 year ago
gina_evans0312
Created by gina_evans0312 almost 6 years ago
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Description

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

Resource summary

Question 1

Question
Which of the following media is most enriched?
Answer
  • Nutrient Agar
  • Blood Agar
  • Chocolate Agar

Question 2

Question
Only nutrient agar allows the growth of fastidious bacteria
Answer
  • True
  • False

Question 3

Question
Name the two dyes used for gram staining
Answer
  • Crystal violet
  • Conicheal
  • Safranine

Question 4

Question
Iodine is used to darken the crystal violet
Answer
  • True
  • False

Question 5

Question
The Gram -ve bacteria lose dye when exposed to decoloriser
Answer
  • True
  • False

Question 6

Question
The peptidoglycan layer is sandwiched between two membranes- what bacteria am I describing?
Answer
  • Gram +ve
  • Gram -ve

Question 7

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