BIOL 13100 Study Guide - Midterm Guide: Lipid Bilayer, Intermediate Filament, Cell Adhesion

• School: Purdue University
• Department: Biological Sciences
• Course: BIOL 13100
• Professor: Ignacio Camarillo

Document Summary

Biology 131: development, structure & function of organisms. Chapter 6: cell membranes: be able to explain what the fluid mosaic model of membranes means. Know the general components of a lipid bilayer: contains hydrophilic and hydrophobic phospholipid bilayer. These phospholipids form a barrier that houses proteins in and on the bilayer. These work as communicator proteins, building proteins, excretion proteins, transport proteins, etc. Cholesterol helps to hold cell membranes strongly together: be familiar with the 3 different types of cell junctions: tight junctions, desmosomes and gap junctions. Know the differences in their specific functions. a. They are formed by multi protein complexes that provide contact between adjacent cells: tight junctions: membranes of two cells form a tight barrier to larger molecules. These barriers help regulate and maintain polarity and osmolarity: desmosomes: made up of desmosome-intermediate filement complexes, which are made of cadres proteins, linker proteins, and keratin intermediate filaments.