Fixed receptor membrane mechanism and mobile receptor mechanism

Answer 1

The fixed receptor membrane mechanism refers to a mechanism where the receptors are embedded in the cell membrane and do not move. When a ligand binds to the receptor, it triggers a signal transduction pathway that initiates a cellular response.

In contrast, the mobile receptor mechanism involves receptors that are not fixed in the cell membrane. These receptors can move within the cell membrane and interact with ligands that are also mobile. This mechanism allows for more dynamic and flexible signaling as the receptors can rapidly bind and unbind with different ligands.

Both mechanisms play important roles in cellular signaling and are utilized by different types of receptors in the body. The fixed receptor membrane mechanism is typically used by receptors that respond to specific ligands and trigger a specific cellular response, such as hormone receptors. On the other hand, the mobile receptor mechanism is often used by receptors involved in immune responses, where the binding of various ligands can lead to different signaling outcomes.