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15-08-2019
Biology

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In circumstances where the body requires prolonged or increased levels of a hormone, the DNA of target cells will specify the synthesis of more receptors on the surface of the cells of the target organ. This is known as ________. A. a reaction to a stressor B. the cell's sensitivity reaction C. up-regulation D. cellular affinity

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Histrionicus Histrionicus

20-08-2019

Answer:

The correct answer is option C. up-regulation.

Explanation:

When the body requires the increased level of the hormone, target cells increase the synthesis of more receptors on the cell surface of the target organ. This process is known as the up-regulation of the receptors for the hormone.

Up-regulation is an increase in the receptors present on the cell surface of target cells so that cells can easily bind to the hormone. Up-regulation makes the cells increase the sensitivity to a hormone.

Thus, the correct answer is option C up-regulation.

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