Because that will take care of all of the electrons that are capable of reacting, none of the inner shell electrons.
因为那样我们可以考虑到,除内层电子以外,所有可以发生反应的电子。
You bring iron ore from one part of the planet, carbon, limestone, you put it into this reactor and you ship this all over the world.
你得到钢铁从地球的一个地方,还有碳,石灰岩,将它们放入这个反应器,你将它运送到世界各地。
So if we have a negative change in energy for any reaction as it's written, what that actually means is we're giving off energy as the reaction proceeds.
如果我们像这里写的这样,在任何一个反应过后,得,到的能量变化为负值,这就意味着我们在这个过程中放出了能量。
What would that kitten do to me when I touched it?
我触到那只猫时,它会有什么反应?
It has to be complex, because we're asking the immune system to be able to respond to every potential foreign pathogen that we come into contact with.
免疫系统是十分复杂的,因为我们需要免疫系统,能够对我们身体接触到的,任何潜在的外来病原体进行反应
Now, all of these parts of the brains are essential and many of them are implicated in interesting psychological processes but where the action is is the cortex.
所有的这些脑组织都是必不可少的,它们中的许多都会参与到心理活动之中,但其实真正的反应则发生在大脑皮层
if we have a very electronegative atom within a certain molecule, what you'll actually find is that it does affect how the molecule is going to take place or take part in different chemical or biological reactions.
如果在某个分子中有一个电负性很高的原子,你会发现它确实会影响到,这个分子所起的作用,在不同的化学反应或者生物反应中时。
But most people think of chemistry as involving reactions.
但是更多的人一想到化学,就会提及到反应。
It's the way, for example, that foreign molecules or antigens get presented to cells of your immune system in order to start the process of making an immune response, so sometimes a cell/cell interaction.
通过这种方式,外源分子,或者说抗原,进入到免疫系统的细胞中后,就会开启免疫反应过程,有时候就是细胞之间的相互作用
It performs a chemical reaction on the protein, taking a phosphorous from ATP and moving that phosphorous onto the protein.
它能够催化蛋白参与如下反应,即将ATP上的一个磷酸基团,转移到蛋白质上
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