Hormones and Heredity - A Discusion of the Evolution of A...
J. T. Cunningham
To respond to specific stimulation in the body, hormones are secreted and the desired message is sent to the target cell and its connection is done through receptors on the target cell. The receptors of the target cells are proteins and can be membrane or intracellular. In other words, the connection is made in the same membrane or it goes inside the cell. These receptors are three dimensional and act like locks and keys by binding to hormones...