Your Lab Partner streaks your Enteric Isolate onto a YGC Plate(!!) . Assuming your Enteric Isolate...
Your Lab Partner streaks your Enteric Isolate onto
a YGC Plate(!!)
. Assuming your Enteric Isolate is
Escherichia coli
(E. coli), what would you expect to see on this YGC
Plate after it had been incubated at 37°C for 48 Hours?
A.• Clear-to-White Colonies
• Zones of Clearing around each of these
Colonies.
_____________________________________________________________________________________
B.
• PinkColonies
• Zones of Clearing around each of these
Colonies.
______________________________________________________________________________________
C.
• Clear-to-White Colonies
• No Zones of Clearing around any of these
Colonies.
__________________________________________________________________________________________
D.
• Purple Colonies
• No Zones of Cleaning around any of these
Colonies.
Why? explain your answer?
Homework Answers
Ans: A.• Clear-to-White Colonies
Zones of Clearing around each of these Colonies.
Explanation: As, E.coli do not have any pigment, it will grow as clear to white colour.
YGC plate has a special property. It has an added antibiotic that prevents growth of any bacteria. This media is useful for Yeast growth. So, zones of clearing around each colonies will be found, because bacterial colonies do not grow in that region due to antibacterial effect.
Add Answer to:
Your Lab Partner streaks your Enteric Isolate onto
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• Record in Table 4 the appearance of the agar immediately
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and the tube was tapped gently to mix DNA and the competent
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