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【单选题】
下列关于 “ 探究细胞大小与物质的运输关系 ” 的模拟实验的一些说法不正确的是
A.
边长为 1cm 、 2cm 、 3cm 的含酚酞琼脂块是用来模拟不同大小的细胞
B.
将琼脂块切成正方体的目的是便于计算 NaOH 的扩散的体积
C.
琼脂块的表面积与体积之比随琼脂块增大而增大
D.
在相同时间内，物质扩散进细胞的体积与细胞的总体积之比可以反映细胞的物质运输的效率， 琼脂块 越 大 ， 物质运输的效率越 小。
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