BE230_Lecture_12 - Cell Structure & Function BE230 Dr...

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Unformatted text preview: Cell Structure & Function BE230 Dr Christine Loscher Lecture 1 Introduction to Cell Communication Overview of the course Principles of Cell Communication Cell-Cell Interactions Hormones Receptors G-protein signaling Enzyme-linked signaling The Study of Cells Cells are very sociable! Cells continually interact with other cells True for both multicellular and unicellular organisms Unicellular organisms usually live in habitats packed with other unicellular organisms These organisms secrete a hard polysaccharide- rich substance (biofilm) that encases them and allows them to attach to a surface beside other cells No physical connection between the cells basis of multicellularity Cell-Cell Attachments Cells are attached in a number of ways 1. Tight junction Composed of speed proteins in the plasma membrane of adjacent cells Form a watertight seal common in cells that form a barrier Can disassemble and reassemble to allow passage of certain cells Cell-Cell Attachments...
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This note was uploaded on 01/05/2010 for the course FSH BT taught by Professor Ianmarison during the Fall '09 term at Dublin City University.

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BE230_Lecture_12 - Cell Structure & Function BE230 Dr...

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