Passive Transport

Passive Transport - Passive Transport diffusion - mov't of...

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Passive Transport diffusion - mov't of molecules from higher to lower concentration continues until concentration is uniform allows certain polar molecules to enter through the channels inner, polar lining of channels allow polar molecules to enter each channel is selectively permeable , only allowing certain molecules to pass through ions need transport proteins to move in/out of the cell ion channels - have hydrated interiors so that ions never come in contact w/ nonpolar fatty acids o voltage and concentration determine direction of ions carriers - brings substances across the membrane by binding to them at 1 end and releasing them out the other o depends on the concentration gradient of the substance being transported o performs facilitated diffusion (either specific, passive, or saturated) o certain red blood cell proteins transfers different molecules in different directions o glucose transporter - adds phosphate group to glucose to keep internal glucose
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Passive Transport - Passive Transport diffusion - mov't of...

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