Exam Prep for Microbiology | Channels for Pearson+

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Gram Stain

9. Microscopes / Gram Stain / Problem 3

In the Gram staining procedure, which of the following happens after washing off the iodine?

A

The gram-positive bacteria becomes purple and the gram-negative becomes colorless.

B

The gram-positive and gram-negative bacteria become colorless.

C

The gram-positive and gram-negative bacteria become purple.

D

The gram-positive bacteria becomes colorless and the gram-negative bacteria becomes purple.

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