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GRAM STAIN LAB QUESTIONS NAME:_____________________________ 1.) Are your bacteria red, or purple? Why are they the color they are? 2.) Are your bacteria Gram positive, or Gram negative? How do you know? 3.) What does the color of your bacteria tell you about the structure of the cell wall of your bacteria? 4.) Microbiologists at the Texas department of Health (TDH) do this stain routinely. If a doctor sends TDH a bacterial smear from a patient, why would they perform a Gram stain on it? 5.) Draw and label a picture of your bacteria using oil immersion microscopy below. Make sure to label the organism and the magnification.
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