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This Concept Map, created with IHMC CmapTools, has information related to: Chapter 7, Selective Permeability may have contributed to one of the earliest episodes of Evolution, Diffusion of water across Selective Permeability, Carbohydrates most are covalently bonded to Proteins, Amphipathic Molecules meaning they contain Hydrophobic Regions, Channel Proteins gated channels controlled stimulus that tells them to open and close are known as Ion Channels, Electrogenic Pump indirectly drives ATP in a mechanism called Contransport, Plasma Membrane generates voltage across a membrane with an Electrogenic Pump, Integral Proteins expose aqueous solutions to the Hydrophilic Regions, Integral Proteins that completely span the membrane are called Transmembrane Proteins, Transport Proteins proteins that function by having a hydrophilic channel are called Channel Proteins, Phospholipids are Amphipathic Molecules, Cytoskeleton on the exterior side certain membrane proteins are attached to fibers of the Extracellular Matrix, Tonicity the control of water balance in hypotonic and hypertonic solutions is Osmoregulation, Plasma Membrane membranes are made of Carbohydrates, Peripheral Proteins are appendages loosely bound to the surface of the membrane often to exposed parts of Integral Proteins, Golgi Apparatus forming Glycolipids, Osmosis is determined by the cells Tonicity, Plasma Membrane fusion vesicles of cell secreted macromolecules Exocytosis, Proteins forming Glycoproteins, Tonicity osmosis will not occur if the cell is immersed in an environment that is Isotonic