这需要预处理，将纤维素分解成葡萄糖分子。

That requires a pretreatment that splits the cellulose into glycose molecules.

youdao

偶尔会有糖分子出现。

Every now and then there's a molecule of sugar.

youdao

它的酶可以将纤维素半纤维素分解为糖分子。

Its enzymes decompose cellulose and hemicellulose into sugar monomers.

youdao

These are the pentoses - remember 5' and 3' because that orients you with respect to what direction the molecule is facing.

这些就是戊糖,记住了5'碳和3'碳就能够,帮你确定分子的方向

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Because of that, if I eat something that's rich in glucose, so it has lots of sugar molecules, the sugar molecules can't pass between the cells.

因此,如果我吃了富含葡萄糖的食物,尽管其含有很多的糖分子,但糖分子不能从细胞间通过

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It could be that that signal is 'you need more glucose', and so the cellular response is to create more glucose transporters to bring more glucose into the cell.

这信号还可能是,"需要更多葡萄糖",细胞的反馈就是,产生更多的葡萄糖载体,将更多的糖分子输送进细胞

耶鲁公开课 - 生物医学工程探索课程节选