BI110 Chapter Notes - Chapter 20: Foodborne Illness, Adenylyl Cyclase, Cyclic Adenosine Monophosphate
Document Summary
Only cells that have receptors tuned to speciic signals can respond to those signals. When a signal binds or is recognized by a receptor the cellular response is: changes in gene expression protein synthesis, transport of molecules across pm, metabolic reacions, secreion, movements, cell division, apoptosis (programmed cell death) Cells communicate with one another through: direct channels of communicaion. Gap juncions (animal cells) spread of electrical signals between cells in cardiac muscle. Plasmodesmata (plant cells: speciic contact between cells. Cell adhesion molecules integral membrane proteins that bind cells to one another or to extracellular matrix: intercellular chemical messengers. Cells can also respond to other external signals that aren"t necessarily produced by other cells. Surface receptors: integral membrane proteins glycoproteins. Binding of a signaling molecule: speciic it, just like an enzyme binding substrate, induces molecular change in the receptor that acivates its cytoplasmic end.
