chp 3 multiple choice

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created 7 years ago by lizandra1994
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Microbiology
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1

Asssume you stain Bacillus by applying malachite green with heat and then counter stain with safranin. Through the microscope the green structures are?

endospores

2

Three-dimensional images of live cells can be produced with

confocal microscopy

3

Carbolfuchsin can be used as a simple stain and a negative stain. As a simple stain, the PH is

higher than the negative stain

4

Looking at the cell of a photosynthetic microorganism, you observe that the chloroplast are green in brightfield microscopy and red in fluorescence microscopy. You conclude that

chlorophyll is fluorescent

5

Which of the following is not a functionally analogous pair of stains?

nigrosin and malachite green

6

assume you stain clostridium by applying a basic stain, carbolfuchsin, with heat, decolorizing with acid-alcohol, and counterstaining with an acidic stain, nigrosin, through the microscope, the endospores are______1___, and the cells are stained _____2___.

1----red: 2--- colorless

7

Assume that you are viewing a Gram-stained field of red cocci and blue bacilli through the microscope. You can safely conclude that you have

two different species

8

Which of the following is not a modification of a compound light microscope?

electron microscope

9

In 1996, scientist described a new tapeworm parasite that had killed at least one person. The initial examination of the patient's abdominal mass was most likely made using

Brightfield microscopy