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4 Cards in this Set
- Front
- Back
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Active Transport |
Movement of large or water soluble substances across the membrane via carrier proteins |
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Active Transport FACTS |
●may move against a concentration gradient ●have kinetic energy ●ATP required ●protein carriers are present- change shape to move substances |
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Molecules that are actively tans ported by carrier transports: |
●Non-lipid soluble ●Large e.g. glucose ●Large & water soluble |
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Ensuring one-way flow |
●ATP changes shape of the carrier protein and hence on 1 side of the membrane the shape of protein will complement the specific molecule to be transported ●once energy has been used by the protein carrier it changes shape and releases the specific molecule ●●This ensures 1-way flow |
