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Question

According to the accepted concept of hormone action, if receptor molecules are removed from target organs, then the target organ will


A

Continue to respond to hormone but in opposite way.

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B

Continue to respond to hormone without any difference

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C

Continue to respond to hormone but will require higher concentration

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D

not respond to hormone

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Solution

The correct option is D

not respond to hormone


The correct option is (D)

Explanation for correct option:

  1. Hormones are usually composed of amino acids, proteins, and peptides.
  2. Owing to that they're insoluble in lipid and as a result, cannot enter the target organ.
  3. Hormones act on the surface of the cell by binding with the specific receptor molecule on in the cell membrane of the cell.
  4. If receptor molecules are removed the hormone would not be able to bind. Hence, the target organ would not respond.

Explanation for the incorrect options:

Option A:

If the hormone fails to bind with the receptor cell the target organ would not receive any message of action hence, it would not respond.

Option B:

Since the target organ would not receive any message from the hormone because of the vacation of the receptor molecule it would not perform any function in the first place.

Option C:

The target organ would not respond in the first place hence, the concentration gradient won't have any effect.

Final answer:

Hence, if receptor molecules are removed from target organs, then the target organ will not respond to the hormone


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