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Membrane Structure and Function

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Subject: 
Biology
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Tags: 
Biology
Membrane biology
Cell membrane
Lipid bilayer
Membrane transport
Membrane protein
Facilitated diffusion
Biological membrane
Carrier protein
Exocytosis
Active transport
Semipermeable membrane
health

Chapter 7 Membrane Structure and Function Overview: Life at the Edge the plasma membrane is the boundary that separates the living cell from its nonliving surroundings selectively permeable: allows some substances to cross it more easily than others Concept 7.1: Cellular membranes are fluid mosaics of lipids and proteins a phospholipid is an amphipathic molecule, meaning it has both hydrophilic and hydrophobic regions head composed of phosphate group attached to one carbon of glycerol two fatty acid tails are hydrophobic in the fluid mosaic model, the membrane is a fluid structure with a ?mosaic? of various proteins embedded in or attached to a bilayer of phospholipids Membrane Models: Scientific Inquiry phospholipids are the most abundant lipid in the plasma membrane

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