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5. If colonies appear within a plaque or the plaque is cloudy, what is the most...

5. If colonies appear within a plaque or the plaque is cloudy, what is the most likely reason?

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Answer #1

Reason : A mixture of lysed cells (due to lytic infection) and lysogenized cells (due to a lysogenic cycle) are turbid plaques. The plaques appear turbid (cloudy), because inside the plaque the lysogenized cells live and form small colonies.

Clear plaque: no growth

Turbid plaque: some growth (colonies)

Explanation:

No growth with transparent plaques, as white plaques only contain phage. Some development of turbid plaques, as the lysogenized cells are going to survive and colonize.

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