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Biology LibreTexts

17.5: Post-lab Questions

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    1. Why do we use oil immersion/100x for viewing bacteria?
    2. Explain the importance of a good smear preparation and the pitfalls of a poor smear prep.
    3. Why is the staining time important?
    4. Go back to our lab on Protozoa. Compare, in quantitative terms, the size of an RBC, a protozoan, and a bacterium.
    5. Explain why you could use crystal violet but not eosin in the simple stain procedure?

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