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aliya0001 [1]
3 years ago
15

The failure, till now, to produce an effective AIDS vaccine may be due to the fact that the causative agent mutates continuously

thus it is practically impossible for the body immune system to take advantage of vaccination.
A. True.B. False
Biology
1 answer:
Furkat [3]3 years ago
3 0

Answer: A. True.

Explanation:

The AIDS virus may constantly change it's form in the host body by mutating. The body immune system becomes unable to produce antibodies which can fight against these mutated cells.

Also, the vaccination used for the purpose of immunization will not be able to combat will the causative agent in the body of the host. As the vaccine contains the microbe which can fight against the virus present in the body. But as the virus is changing it's form the microbe may not be able to compete with the virus. Hence, the use of vaccine will become useless.

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Why does ethanol becomes cloudy/white when testing fat
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Answer:

Ethanol is known as a fat solvent, and the cloudy or white color that it acquires when testing fat is due to the fact that this test includes the addition of water, forming an emulsion.

Explanation:

<u>The emulsion test for fats</u> is a test used to show the presence of these in some substances or foods.

Under normal conditions, fats are miscible - they can be dissolved - in ethanol, an alcohol, but not in water.

This test consists of dissolving the substance to be tested in ethanol, and then adding water. The principle by which the emulsion test is governed is that ethanol allows a certain amount of fat to dissolve in water, forming a cloudy or whitish emulsion.

Learn more:

Differences between emulsion and solution brainly.com/question/6677364

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