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nlexa [21]
3 years ago
15

Methylene blue can be used to stain DNA because it: (2 pts) forms ionic bonds with DNA changes the pH and therefore the structur

e of DNA makes DNA electron dense is an effective chemical fixative for cells is none of the above
Biology
1 answer:
Lesechka [4]3 years ago
8 0

Answer: Methylene blue can be used to stain DNA of a cell because it (forms ionic bonds with DNA).

Explanation:

To examine the components of a cell usually under a microscope, a stain or dye is being used to provide a clear and defined view of the area under study.

The deoxyribonucleic acid (DNA) of a cell which contains the hereditary information of the cell is located in the nucleus.

Methylene blue is a type of stain used by biologists which helps them view microscopic life in brilliant color. It is a cationic stain (positively charged blue dye); and binds to negatively charged parts of the cells, such as nucleus (DNA) and RNA in the cytoplasm (with lower affinity).

When DNA of a cell comes in contact with methylene blue on a slide, their opposite charges attract, causing methylene blue's "rings" to slide in between the "rungs" of the DNA "ladder." As a result, a rich blue stain that identifies the location of the cell nucleus can be observed. This produces a photosensitive reaction which can then be viewed under the microscope.

Therefore is can be used to stain the DNA of cell because it forms ionic bonds with DNA.

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<h3>What is the causing agent?</h3>

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<h3>How is it transmitted?</h3>

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<h3>What are the symptoms?</h3>

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Antibiotics and antitoxins are often used, but the best is to prevent it through vaccination.

Learn more about diphtheria in: brainly.com/question/13061650

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7 0
2 years ago
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