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But if a medication can block the capsaicin-like molecule from reaching the neuron, it could stop the brain from ever registering there was any pain to begin with.
VOA: standard.2010.05.04
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And then linked to the glycerol instead of a third fatty acid chain is a water soluble molecule, like a salt.
但连到甘油上的第三个基团不是脂肪酸链,而是一种水溶性的分子,像盐一样
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You have a molecule where we put the carbon in the center, and we go up like this, like this, and out the back.
你有一个分子,我们把碳放在中间，现在我们得到了。
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He developed what he calls a suicide molecule that acts like the protein which tells cells to self-destruct.
VOA: special.2010.03.16
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They have two fatty acid chains and so these are the oily like parts of the molecule, the molecules that behave like oil.
它们含有两条脂肪酸链,这是部分分子具有油脂的属性,使磷脂分子具有油脂的属性
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That's how tight the junctions are, not even a small molecule like glucose can pass between them.
可见胞间连接多么紧密,甚至像葡萄糖这样小的分子也不能通过
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They'd like to be able to refer to each carbon separately so they can talk about reactions with this molecule, so they number the carbons.
为了在探讨这种大分子的,化学反应时能清楚地,表示每一个碳原子,人们对碳原子进行了编号
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Now this behaves very differently in water because part of it is water soluble, this part is, it's a molecule that would like to dissolve in water and part of it is like oil, it doesn't want to dissolve in water.
它们在水中表现出十分不同性质,因为一部分是水溶性的,这一部分是,是一种可以溶于水的分子,而另一部分就像油,不会溶于水中
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The backbone's on the outside of the molecule like the upright struts of a ladder on the outside of a ladder.
主链位于DNA分子结构外侧,像梯子两侧上下的支柱,记住是梯子外侧
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It's called the G-protein coupled receptor because it's a receptor, like the one shown here, that's coupled to a special molecule called a G-protein.
之所以叫这个名字是因为这种受体,就像这里展示的一样,是与一种叫做G蛋白的特殊分子偶联的
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The whole structure of a DNA molecule looks like this, going back to a more cartoon version like I showed you before but adding some detail onto it now.
NA分子的全部结构都和,刚才的卡通模型上差不多,但细节更为丰富
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