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membrane plasmique - Poly-Prepas

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Des protéines de la <strong>membrane</strong><br />

permettent le passage de ce qui ne<br />

peut passer à travers les lipides :<br />

• Forment des canaux à travers<br />

la <strong>membrane</strong><br />

OU<br />

• s’associent aux<br />

molécules à<br />

transporter et les<br />

déplacent dans la<br />

<strong>membrane</strong><br />

42

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