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Harris Perlman says the suicide molecule halted and even reduced rheumatoid arthritis in seventy-five percent of mice in the study.
VOA: special.2010.03.16
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And in this case, the tie-breaker goes to the molecule in which the negative charge is on the most electronegative atom.
而在这种情况下，我们需要进行“附加赛“,也就是看看分子中带有负的,形式电荷的原子是不是电负性最高的。
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So if we add them all up, there should be no net charge on the molecule, if the molecule is neutral.
因此如果我们把它们都加起来，这个分子上应该没有净电荷，如果这个分子是中性的话。
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They observed that for every molecule of carbon dioxide taken in by the plants, they lost forty-four percent less water.
VOA: special.2010.01.26
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The center of excess negative charge on all of the dipoles is at the very center of the molecule.
多出来的键,的负电荷中心都集中在,分子的正中间。
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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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The name of the molecule isn't important, but it's a molecule that stimulates the heart to produce new blood vessels around it.
这种分子的名字无关紧要,但要知道它能刺激,在病变血管周围生成新血管
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The researchers note,however, that they could also be seeing evidence of another molecule,hydroxyl.
VOA: special.2009.09.30
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If you were to make that change you would find that the molecule now has completely different biological and chemical properties.
如果要做出这样的变化,你会发现,分子的生物形状,和化学性质完全改变了。
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When the skin samples were heated to 48 degrees, they produced this capsaicin-like molecule into a solution.
VOA: standard.2010.05.04
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PROFESSOR: No. So, compared to the atoms, it should be somewhat the same energy, we shouldn't get any extra stabilization from forming the molecule.
不会，所以和原子相比，它的能量相同，形成分子并不会带来额外的稳定性。
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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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we know that h is always terminal, right after the molecule that it's attached to.
我们知道氢原子永远都在末端，放到和它成键的分子的后面。
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One would stop the body from producing the capsaicin molecule.
VOA: standard.2010.05.04
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So let's draw the electron configuration of hydrogen, the molecule, molecular hydrogen.
让我们来画氢原子的,电子构型，分子，氢分子。
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What we've seen is we have a net lowering of energy of the molecule versus the individual atoms.
分子轨道对于单个原子轨道来说,我们可以看到的是一个净的能量降低。
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We're already using it up in this pi bond here, so that means we're limited to only two other spots on the molecule, so we have three.
我们已经把它用到这个π键里去了，所以这意味着,我们在分子里只剩下两个位置，所以一共是三个。
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And what you can see directly from looking at this energy level diagram, is that the molecule that we have is now more stable in the individual atoms.
你从直接看,能级图中会发现，分子比单个的,原子能量更低。
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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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The rest of this, this sort of beige part of the molecule here is called the polylinker part.
剩下这部分,这部分淡棕色的分子叫做多克隆位点
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The molecule is net neutral, but this right end is a little bit more negative and the left end is a little bit more positive.
这分子是电中性的，但右边要带一点负电荷,而左边要带一点正电荷。
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now we're dealing with a lot of different atoms in the molecule, much more complicated than the initial case of the cyanide ion where we only had two.
现在我们要面对的分子中有很多不同的原子，比我们一开始只有两个,原子的氰离子复杂多了。
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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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It's a long word that just means other chemistry that happens on the molecule after translation.
翻译后修饰意味着,在翻译之后对于产物分子的其他化学修饰
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And where we had left off was we were going to start one example of thinking about now where we have a heteronuclear diatomic molecules, so two different atoms in terms of forming the molecule.
我们还剩下一个,异核双原子分子的例子没讲,这里组成分子的原子，是不同的。
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And what's important to keep in mind about formal charge is if we have a neutral atom, such as we did in thionyl chloride here, the sum of the individual formal charges on individual atoms within the molecule have to equal 0.
而关于形式电荷记住一点是很重要的,那就是如果我们有一个中性原子，比如亚硫酰氯，那么这个分子中的所有原子的,形式电荷之和应该等于零。
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And yet, the molecule is symmetric and nonpolar.
所以这个分子是对称非极性的。
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The center of the delta minus is the center of the molecule.
正电荷中心在分子中心。
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So, it doesn't need to bind to a receptor on the surface of the cell in order to work because the molecule can actually enter the cell directly.
所以无需与细胞表面受体相结合来起效,因为这些分子能直接进入细胞
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One is in terms of how you deliver the molecule so it goes where you want it to go and not where else you want it to go.
其一是如何精确输送这种分子,到你想要的部位
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