Question

Second messenger in hormonal action.

• A. Intergovernmental panel on Climate Change
• B. International Panel on Climate Change
• C. Integrated Panel on Climate Change
• D. Interdisciplinary Panel on Climate Change

Answer 1

Answer:

D. Interdisciplinary Panel on Climate Change

Mechanism of hormonal action:

• Hormones function by binding to their receptors which are located on the target site, to form the hormone receptor complex.

• The receptors are usually located either on the plasma membrane (membrane receptors) of the targets or inside the cell as in nucleus (intracellular receptors).

  Role of the secondary messengers:

• The protein hormones are not lipid soluble and are unable to penetrate through the plasma membrane which is composed of phospholipid bilayer.

• Hence, these bind to the receptors present on the plasma membrane forming a hormone receptor complex.

• This binding generates other molecules like C a + + , cAMP etc. which act as secondary messengers.

• These secondary messengers drive a cascade of biochemical reactions and physiological changes in the target cell.