Many hormones are proteins used in cellular communication. Each hormone carries a specific message to specific target cells. State why each of these hormones is able to deliver a different message.

The reason as to why each hormone is able to deliver a different and very specific message is because each Hormone affects only specific cells that are called target cells, and also these target cells will bear a particular kind of receptor for a particular hormone. There is something called target cell specificity, such that hormones target a limited number of cells based on the presence of a specific receptor, as they circulate in the bloodstream. Target cells are capable of responding to hormones because they display receptors to which the circulating hormone can bind.