Organic compounds contain carbon in their molecules.
有机化合物的分子里含碳。
There are data on the rates of diffusion of molecules.
有一些关于分子的扩散速率的数据。
The DNA molecule is compounded from many smaller molecules.
脱氧核糖核酸分子是由许多更小的分子组成的。
Protein molecules compose all the complex working parts of living cells.
蛋白质分子构成了活细胞所有复杂的工作部件。
Ordered arrangements of large groups of atoms and molecules are highly improbable.
大的原子群和分子群的有序排列是极不可能的。
Professor Orr has developed interesting ways of tagging chemical molecules using existing laboratory lasers.
奥尔教授已经研发出了用现有的实验室激光给化学分子贴标签的有趣方法。
The molecules combine, forming what is called a Schiff base within the protein.
这些分子结合在一起，在蛋白质中形成所谓的希夫碱。
The algae capture the sun's energy by photosynthesis and store it in organic molecules.
藻类通过光合作用吸收太阳能，并将其储存在有机分子中。
Every substance, no matter what it is, is composed of very small particles called molecules.
各种物质，不论它是什么，都是由一些称为分子的很小的粒子构成的。
As we eat, specialised receptors in the back of the nose detect the air molecules in our meals.
当我们吃东西的时候，鼻子后部的特殊感受器会检测我们食物中的空气分子。
Studies of plants have now identified a new class of regulatory molecules called oligosaccharins.
对植物的研究已经发现了一种叫做寡糖的新一类调节分子。
And on top of that, when that visible radiation bounces off those molecules, it scatters in all directions.
除此以外，当可见光波从这些分子上反射出去时，它会向四面八方扩散。
We think meteors that crashed into the moon or tails of passing comets may have introduced water molecules.
我们认为，撞击月球的流星或经过的彗星尾巴可能会留下一些水分子。
This minuscule rotor wiggled clockwise or anticlockwise as molecules bumped into it from one side or the other.
当分子从一边或另一边撞击这个微型转子时，它会顺时针或逆时针摆动。
All of these alternatives are carbon-based fuels whose molecules are smaller and simpler than those of gasoline.
所有这些替代品都是碳基燃料，其分子比汽油分子更小、更简单。
All of these alternatives are carbon-based fuels whose molecules are smaller and simpler than those of gasoline.
所有这些替代品都是碳基燃料，其分子比汽油分子更小、更简单。
The combustion of larger molecules, which have multiple carbon-carbon bonds, involves a more complex series of reactions.
具有多重碳-碳键的大分子的燃烧涉及到一系列更复杂的反应。
Almost all the oxygen in water is oxygen 16, but a few molecules out of every thousand incorporate the heavier isotope 18.
水中几乎所有的氧都是氧16，但每一千个分子中就有几个含有较重的同位素18。
Salts are enriched around electriferous groups of polymer molecules in solution, which formed a salt concentration gradient.
溶液中的盐份富集在聚合物分子的带电基团附近，并形成盐浓度梯度分布。
"They are like little factories that spit out biofuel molecules without the need for starch or cellulose, " explains Gibbons.
吉本斯解释：“这就像一个不需要淀粉或者纤维素就能生产出生物燃料分子的小型工厂。”
Now investigators think they know at least some of the molecules that act as morphogenetic determinants in early development.
现在研究人员认为他们至少知道了一些在早期发育中对形态起决定作用的分子。
The molecules of carbon dioxide in the Earth's atmosphere affect the heat balance of the Earth by acting as a one-way screen.
地球大气层中的二氧化碳分子像一个单向屏一样影响着地球的热量平衡。
This is accomplished by a complex system of chemical messengers that in plants include hormones and other regulatory molecules.
这是通过一个复杂的化学信使系统来完成的，在植物中包括激素和其他调节分子。
An increase in the amount of carbon dioxide means that there are more molecules of carbon dioxide to absorb infrared radiation.
二氧化碳含量的增加意味着有更多的二氧化碳分子吸收红外线辐射。
Before letting its leaves go, the tree dismantles their chlorophyll molecules and ships their valuable nitrogen back into the twigs.
在树叶凋落之前，树会分解叶绿素分子，把有用的氮运回树枝中。
The shock wave forms a cone of pressurized air molecules which move outward and rearward in all directions and extend to the ground.
冲击波形成了一个由压缩气体分子构成的圆锥体，它朝四面八方向外和向后移动，一直延伸到地面。
The weakened fall leaf then becomes vulnerable to the highly destructive effects of the oxygen created by the excited chlorophyll molecules.
活跃的叶绿素分子产生的氧气破坏性强，秋天衰弱的树叶随后变得更容易受到影响。
This extremely poisonous carbon compound happens to be very reactive, allowing it to lock in hugely complex but stable chains of other molecules.
这种剧毒的碳化合物碰巧是非常活泼的，这使得它能够锁定在非常复杂但是稳定的其他分子链中。
From these studies, scientists have concluded that the surface of the primitive Earth was covered with oceans containing the molecules fundamental to life.
从这些研究中，科学家们得出结论，海洋覆盖着原始地球的表面，其中含有构成生命的基本分子。
It must also be appreciated that many important new bio-products will still be synthesized chemically from models derived from existing biological molecules.
还必须认识到，许多重要的新生物产品仍将从现有生物分子衍生的模型化学合成。
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