19.3: Pre-lab Questions
- Page ID
- 40276
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- What is the purpose and the advantage of Gram Staining bacteria?
- Name the chemical and give the purpose of each of the following in the Gram stain:
- Primary stain
- Mordant
- Secondary stain
- Color in the following diagram of bacteria (clear, pink, or purple) during the various stain steps:

- Draw and color a picture with Gram + cocci, Gram + rods, and Gram – rods.

Contributors and Attributions
Kelly C. Burke (College of the Canyons)