Cell Membrane Transport

G nak pump this is the sodiumpotassium atpase pump

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Unformatted text preview: ansport: Rate of transport of each carrier Number of carriers in membrane Concentration gradient ALL carriers demonstrate saturation Passive and Active Transport: Channel Proteins Active: non- spontaneous Requires cellular energy Involves a pump Movement is uphill Passive Channel Protein: Transmembrane protein Functions as a passageway or pore Substance specific, not saturable E.g. aquaporins, ion channels (leak- meant to be a passive pore for gradient movement, gated- must be stimulated by something like a higher voltage or ligands) Factors affecting the rate of transport via ion channels: Transport rate of each channel Number of channels in each membrane Active Transport Pumps: Transmembrane protein Function as transporter and enzyme Can harness energy Have specific bind...
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