点击下载:北京大学:《细胞生物学 Cell Science》课程教学资源(PPT课件讲稿)The movement of substances across cel membranes
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transported molecule channe carrier protein protein concentration bilayer gradient simple channel- carrier- diffusion mediated mediated PASSⅣ VE TRANSPORT ACTIVE TRANSPORT
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点击下载:北京大学:《细胞生物学 Cell Science》课程教学资源(PPT课件讲稿)The movement of substances across cel membranes
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