true or false and why? if two different populations of cells have the same receptor for...

true or false and why? if two different populations of cells have the same receptor for a particular hormone, they will also have the same response when a hormone is released

Expert Solution

False

For example, adrenaline, secreted by the adrenal medulla acts on two different types of cells - skeletal muscle cells and the smooth muscle cell of lungs. Both these cell types have the same receptors for the adrenaline, G-protein Coupled Receptor. In the skeletal muscles adrenaline leads to the breakdown of glycogen to release glucose into the blood stream which is necessary at the time of stress during which adrenaline is secreted. The breakdown of glucose by its oxidation releases energy to overcome stress. For this glucose oxidation, oxygen is needed which is supplied from the lungs. When adrenaline reaches the smooth muscle cells of the lungs it binds to the GPCR and causes the relaxation of the muscle cell which increases it oxygen intake capacity needed for increased glucose oxidation

Thus it is clear when a hormone binds to the same receptor on two different cell types, it produces different response.

gladiator answered 2 years ago

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