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葡萄糖进入细胞属于()

单选题
2021-12-27 17:46
A、单纯扩散
B、主动运转
C、离子通道介导的易化扩散
D、载体介导的易化扩散
E、胞吞作用
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正确答案
D

试题解析
本题要点是易化扩散。易化扩散包括两种形式:载体介导的易化扩散和离子通道介导的易化扩散。载体介导的易化扩散具有特异性高饱和现象。葡萄糖、氨基酸和核苷酸的跨膜转运属于此种类型。主动运转指由离子泵和转运体蛋白介导的消耗能量、逆浓度梯度和电位梯度的跨膜转运,分原发性主动运转和继发性主动转运。

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