' 'M*A*S*H' and the medium,' Gelbart added, 'were made for each other.' For 11 years (10 in the Top 20), the show deftly blended sharp, thoughtful humor wi (moreâ¦)A beloved, multi-Emmy-winning series about Army surgeons cutting up amid the Korean War. 'War is hell.
CHAPTER 24 Plasma Membrane Receptors Cells use about 20 different families of receptor proteins to detect and respond to the myriad of incoming chemical and physical stimuli (Appendix 24-1). Most receptors are plasma membrane proteins that interact with chemical ligands or are stimulated by physical events such as light absorption. A few chemical stimuli, including steroid hormones and the gas nitric oxide, cross the plasma membrane and bind receptors inside the cell. Figure 24-1 sixteen classes of receptors with signal transduction mechanisms.
A molecule that binds to a receptor is called a ligand, and can be a peptide (short protein) or another small molecule such as a neurotransmitter, hormone, pharmaceutical drug, toxin, or parts of the outside of a virus or microbe.ach receptor is linked to a specific cellular biochemical pathway. While numerous receptors are found in most cells, each receptor will only bind with ligands of a particular structure, much like how locks will only accept specifically shaped keys.