BIOL 1020 Lecture Notes - Lecture 17: Shmoo, Cell Signaling, Cellular Respiration

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1020
• Professor: Joy E.Stacey

Document Summary

Biol 1020: lecture 17 cellular communication and cell. Cell signalling mechanism: cell signal must be fast and strong, fight or flight response: must harvest glucose for cellular respiration quickly for response to occur, must happen fast and in great magnitude. In summary: release of signal molecule, reception of signal, transduction. In case of plant cell: must make through cell wall. Sometimes second messenger to help relay third stage is response: may be production of protein for problem at hand. If resume fatty acids, restore function: fats essential for building cell membrane and cell signalling. 3 steps in signal and response: reception, transduction, response. Transduction: relayed inside the cell, sometimes involves second messenger, small hydrophilic molecule. Inside cell: see diagram, cause series of changes cause activation of second messenger, why do we have small hydrophilic molecule as messenger, aqueous medium, can move quickly in cell, good control point for messaging process.