For routine slides, bacteria are attached or \"fixed\" to the slide by: a. Air d

Question

For routine slides, bacteria are attached or "fixed" to the slide by:

a. Air drying, then adding Ethanol to cover slide

b. use loop to stick bacteria onto slide

c. Air drying, then passing slide several times through a flame.

d. precoating slides with a thin film of alcohol

e. Air drying, removing all liquid.



The best way to prepare samples to observe the organization of bacteria clusters is by

a. -- All of these stains give an equally good visualization of structure.

b. Direct staining with a positively charged dye.

c. Differential staining with Gram's stain.

d. indirect staining with a negatively charged dye.

Explanation / Answer

c. Air drying, then passing slide several times through a flame Depends on which types of bacteria you're wanting to view...some staining a very specific; generally it would be this if it's simple gram positive and gram negative. c. Differential staining with Gram's stain.

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