One Technique for Staining Bacteria for Viewing Under the Microscope

question 43

Multiple Choice

One technique for staining bacteria for viewing under the microscope is called the Gram stain. In this technique, alcohol is used as a decolorizer because it degrades the outer membrane found in some bacteria. What chemical component of the cell does alcohol affect?

• A) Lipid
• B) Protein
• C) Carbohydrate
• D) Nucleic acids

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