Cellular Transport
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| Active Transport | Movement of molecules across a cell membrane. Uses energy.
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| Carrier Protien | Involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane.
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| Cell Membrane | The semipermeable membrane surrounding the cytoplasm of a cell.
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| Channel Protien | A protein that allows the transport of specific substances across a cell membrane.
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| Concentration Gradient | The process of particles, which are sometimes called solutes, moving through a solution or gas from an area of higher number of particles to an area of lower number of particles.
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| Diffusion | The process by which molecules intermingle as a result of their kinetic energy of random motion.
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| Endocytosis | A form of active transport in which a cell transports molecules into the cell by engulfing them in an energy-using process.
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| Exocytosis | A process in which an intracellular vesicle moves to the plasma membrane and subsequent fusion of the vesicular membrane and plasma membrane ensues.
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| Facilitated Transport | The process of spontaneous passive transport of molecules or ions across a biological membrane
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| Fluid-mosaic Membrane Model | Describes the plasma membrane of animal cells.
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| Glycolipid | Membrane components composed of lipids that are covalently bonded to monosaccharides or polysaccharides.
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| Glycoprotein | proteins that contain oligosaccharide chains covalently attached to polypeptide side-chains.
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| Hydrophilic | Water loving
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| Hydrophobic | Water fearing
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| Hypertonic | concentration of solutes is greater outside the cell than inside it..
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| Hypotonic | concentration of solutes is greater inside the cell than outside of it.
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| Isotonic | concentration of solutes is the same both inside and outside of the cell.
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| Osmosis | spontaneous net movement of solvent molecules through a semi-permeable membrane into a region of higher solute concentration
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| Passive Transport Processes | A form of transport by which no energy is required, includes diffusion and facilitated diffusion
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| Phagocytosis | the process by which a cell—often a phagocyte or a protist—engulfs a solid particle to form an internal vesicle known as a phagosome.
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| Phospholipid | a class of lipids that are a major component of all cell membranes.
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| Phospholipid Bilayer | a thin polar membrane made of two layers of lipid molecules.
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| Pinocytosis | a mode of endocytosis in which small particles are brought into the cell, forming an invagination, and then suspended within small vesicles.
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| Pressure Gradient | A physical quantity that describes which direction and at what rate the pressure changes the most rapidly around a particular location.
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| Selectively Permeable | A type of biological membrane that will allow certain molecules or ions to pass through it by diffusion and occasionally specialized "facilitated diffusion"
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| Tonicity | Measure of the effective osmotic pressure gradient of two solutions separated by a semipermeable membrane.
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Created by:
curquhar
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