To best observe the clustering of bacteria, you should: a. use a needle instead

Question

To best observe the clustering of bacteria, you should:

a. use a needle instead of a loop for spreading your bacteria sample.

b. take care not to spread the bacteria too much on the slide.

c. use bacteria from a thick film

d. from growth on agar surfaces.

e. use bacteria from liquid bacteria culture.



An Indirect stain is the best way to see:

a. Endospores of bacteria.

b. details of the shape and clustering of bacteria.

c. the size of the nucleus of a bacteria.

d. thickness of the cell wall of bacteria.

e. number of flagella and pili on bacteria.



What is the main characteristic of a "Direct Stain"?

a. It has a negative charge.

b. It binds to RNA better than to DNA.

c. It is hydrophobic

d. It is hydrophilic.

e. It has a positive charge.

Explanation / Answer

c. use bacteria from a thick film

b. details of the shape and clustering of bacteria.

e. It has a positive charge.

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