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Reaching for a cell phone when it's going off, you're nine times more likely to get into an accident than normally driving."
VOA: special.2010.07.01
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That DNA gets replicated to make many more copies of the viral DNA using host mechanisms, that is, often using the DNA polymerase which is naturally present in the host cell for its own replication.
病毒DNA进行复制,通常是利用在宿主细胞自身的有关物质,利用宿主细胞中天然存在的,DNA聚合酶来大量复制病毒DNA
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A pancreas--cell in the pancreas, for example, needs to make insulin and so the gene for insulin is transcribed.
举个例子,一个胰腺细胞,要分泌胰岛素,那么编码胰岛素蛋白的基因就会被转录
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For some people, policies about stem-cell research, same-sex marriage and abortion rights threaten religious beliefs.
VOA: special.2009.05.22
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You could see, for example, when it's expressed in a cancer cell, and where it's expressed.
你可以看到，比如说，它什么时候在癌细胞里被表达，在哪里被表达。
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The Royal Swedish Academy of Sciences is honoring all three researchers for studies of the structure and operation of a kind of cell called a ribosome.
VOA: special.2009.12.08
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The name giving part for the hair cell is so-called a hair bundle.
所以叫毛细胞,是因为这种细胞有一个发状的纤维束。
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Telomeres are necessary for a cell to divide.
VOA: special.2009.10.07
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So, for example, in an electrochemical cell, it would be possible to take the sodium ion, give back its electron, and convert it into a metallic sodium, take the chloride ion, remove its electron, and restore chlorine gas.
所以，例如一个电化学的电池，它可能带有钠离子，让它得到电子，把它变成金属钠，得到氯离子，让它失去电子，作为氯气储存。
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Jennings says talking on the phone and reaching for a cell phone "is akin to having four beers and driving."
VOA: standard.2010.06.24
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Well, I think that if the great majority of people try to derive maximum utility out of a service, like using cell phones and the convenience that cell phones provide, that sacrifice is necessary for satisfaction to occur.
我觉得如果绝大多数人想要,从某项服务中获得最大功利，比如使用手机，享受手机所带来的便利，那么为了满足需求，这种牺牲就是必要的。
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In the event of violent protests, troops will isolate areas set for demolition and jam the cell phones of settlers.
VOA: standard.2009.12.21
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These proteins have functions that are essential for life of the cell, they transport molecules back and forth across the membrane.
这些蛋白所起的功能,对于细胞生存至关重要,它们负责转运分子通过细胞膜进出细胞
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According to Jim Jennings, a spokesperson for Allstate Insurance Company, says the number one cause of distracted-driving accidents is cell phones.
VOA: standard.2010.06.24
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Cells can stop in their lifetime at some point in the cell cycle and persist for long periods of time.
细胞生命期可以停止在细胞周期的某个点,并保持很长时间
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"Reaching for a cell phone when it's going off, you're nine times more likely to get into an accident than normally driving."
VOA: standard.2010.06.24
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That ligand was one for which the cell had a receptor that further encouraged it to produce more of the ligand.
对于带有对应受体的细胞来说,这种配体能够刺激细胞产生更多的配体
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In Zambia,for example, farmers without bank accounts can use their cell phones to buy seeds and fertilizers.
VOA: standard.2010.07.28
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They're everywhere in cells throughout your body and they are responsible for lots of the biochemistry of cell/cell interaction and signaling.
它们在身体各处的细胞中都有,并负责很多细胞间的相互作用,及信号转导的生化过程
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While DNA molecules contain the blueprint for life inside each cell of every organism, it is the ribosome that translates that information into life.
VOA: standard.2009.10.07
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For example, if I isolated this one called the myeloid cell, it's capable of forming red blood cells, megakaryocytes and neutrophils.
比如,如果我分离出一个髓系细胞,它就能生成红细胞,巨核细胞和嗜中性粒细胞
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As an incentive, the company offers cash for cell phones, smart phones and older laptops.
VOA: standard.2010.07.12
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All those things have to happen in an orderly fashion, in enough quantity in order for a particular cell to make a protein.
所有的步骤必须按部就班,保质保量地进行,让一个特定的细胞合成特定的蛋白质
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For example, the solar cell could be built into roofing material, saving money on installation.
VOA: standard.2010.02.19
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For example, a gene that makes a cell cancerous, I'd like to stop it from being expressed.
举例来说,如果某段基因导致细胞癌变,我就希望阻止它表达
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For hepatitis C vaccine we're learning a lot from in vitro or cell-based methods."
VOA: standard.2010.02.16
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They're not responsible necessarily for moving molecules inside and out, but they sit at the outside of the cell and they wait for signals.
它们不负责将分子运进运出,而是冲着细胞外面坐等信号
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They don't want him to go out. He's been in jail for more than 20 years now and the maximum rule is to keep him inside a cell.
VOA: standard.2010.07.07
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Well, it turns out that we could not identify, at least at that point, a cell culture that would serve as a host for vaccinia.
然而我们还不能断定,至少这个时候无法断定,这些被感染的细胞就是牛痘病毒的宿主
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The topic for this week is cell communication: how mechanisms that cells within a complex organism use to communicate with each other at short distances or long distances.
本周的主题是细胞通讯,即在一个复杂机体中的细胞,采用何种交流机制,在或长或短的距离中相互联系
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