Question

In hormone action, if receptor molecules are removed from target organ, the target organ will

• A. Continue to respond to hormone
• B. Not respond to hormone
• C. Continue to respond but requires higher concentration
• D. Continue to respond but in the opposite way

Answer 1

Answer: (B)

Not respond 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 organ, the target organ will not respond to hormone.

So, the correct answer is 'Not respond to hormone'.