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14 Cards in this Set
- Front
- Back
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lipid bilayer
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double layered sheet that forms the core of nearly all cell membranes
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Concentration
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the mass of solute in a given volume of solution, mass, or volume
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Diffusion
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Process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated.
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Selective Permeability
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Property of biological membranes that allows only certain substances to pass through them.
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Osmosis
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Diffusion of water through a selectively permeable membrane.
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Facilitated Diffusion
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Movement of specific molecules across cell membranes through protein channels.
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Active transport
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Energy requiring process that movies material across a cell membrane against a concentration difference.
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Endocytosis
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Process by which a cell takes material into the cell by infolding of the cell membrane.
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Phagocytosis
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process in which extensionsof cytoplasm surround and engulf large particles and take them into the cell.
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Exocytosis
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Process by which a cell releasees large amounts of material
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Cell specialization
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seperate roles for each type of cell in multicellular organisms.
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Tissue
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Group of similar cells that perform a particular function
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Organ
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Group of tissues that work together to perform closely related functions
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Organ system
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Group of organs that work together to perform a specific function.
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