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cells
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Cell four principle parts 1. plasma cell membrane 2. cytoplasm 3. organelles 4. inclusions Plasma cell membrane has four basic functions 1. separates ECF from ICF 2. facilitates contact with other body cell or foreign cells 3. provides receptors for chemicals 4. mediates entrance and exit of materials Proteins in cell membrane have a five of functions 1. structural support 2. transport molecules across membrane 3. enzymatic control of chemical reaction at cell surface 4. receptors of hormones 5. cell markers Selective permeability function of four factors 1. size of molecule 2. solubility in lipids 3. charge on ions 4. presence of carrier molecules Passive 1. Simple diffusion 2. Facilitated diffusion 3. osmosis 4. dialysis 5. filtration Facilitated diffusion three things determine how fast 1. difference in concentration 2. numbers of carriers available 3. speed of carriers Isotonic Same concentration of solute as ICF Hypotonic Lower conc. of solute than ICF, cells will burst Hypertonic Higher conc. of solute than ICF, cells will shrink Filtration 3 things for how fast 1.
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