14.人体所有活细胞的细胞膜都能  A.在神经递质的作用下产生兴

14.人体所有活细胞的细胞膜都能 

 A.在神经递质的作用下产生兴奋         B.依靠主动运输转运无机盐

 C.参与分泌蛋白的转运过程         D.识别侵入体内的抗原物质

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