CELLULAR TRANSPORT - CELLULAR TRANSPORT Chapter 3 The...

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CELLULAR TRANSPORT Chapter 3 The easiest way to succeed is to work hard -ANON-
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TRANSPORT 1- Integral proteins 2- Peripheral proteins
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The Cell Membrane (Fig. 3.14b)
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Types of Cellular Transport Passive Transport requires cell energy 1. Simple Diffusion 2. Facilitated Diffusion 1. Carrier ( Receptor) protein 2. Channel protein 3. Osmosis Active Transport No cell energy needed 1. Protein Pumps 2. Endocytosis 1. Pinocytosis 2. Phagocytosis 3.Exocytosis
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Passive Transport (Higher Lower Concentrations) Doesn’t require energy Move molecules from higher to lower concentration Cell uses no energy Molecules spread out from an area of higher concentration to an area of lower concentration .
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PASSIVE TRANSPORT: DIFFUSION Random movement of particles from an area of high concentration to an area of low concentration . ( Higher to Lower ) Diffusion continues until all molecules are evenly spaced: equilibrium
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Simple Diffusion
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Passive Transport: Facilitated Diffusion Uses MEMBRANE PROTEINS to speed up diffusion Allows for larger molecules to pass through membrane E.g. glucose transport Carrier Protein CHANNEL PROTEIN
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High Concentration Low Concentration Cell Membrane Glucose molecules Protein channel Passive Transport: 2. Facilitated Diffusion Transport Protein Through a Cellular Transport From a- Low
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2. Facilitated diffusion : diffusion of specific particles through transport proteins.
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