Question

As per accepted concept of hormone action, if receptor molecules are removed from target organs, the target organs will

• A. Continue to respond to hormone but in opposite way
• B. Continue to respond to hormone without any difference
• C. Continue to respond to hormone but will require higher concentration
• D. Stop responding to hormone

Answer 1

The correct option is D Stop responding to hormone

Hormones bind to specific proteins known as hormone receptors to produce their effects. These receptors are present on target tissues only. There are two types of receptors in target tissues:

• Membrane bound receptors : These are present on the cell membrane of target cells.
• Intracellular receptors: These are present inside the target cell.

When a hormone binds to its receptor, hormone receptor complex is formed. This complex leads to some biochemical changes in target tissue. Hormones regulate metabolism and physiological functions of target tissue.

Hence, if receptor molecules are removed from target organs, the target organs will stop responding to hormones.

So, the correct answer is 'Stop responding to hormone'.