You are about to go off on Friday night to see these movies and let's allow some communication ahead of time.
现在你们约好了周五晚上一起看电影,你们可以先沟通一下
And there are lots of solutions that chemists come up with -- there's always new techniques that allow us to do this, and these are just some of the first, and we'll go through them in a little bit of detail here.
的情况下研究或者发现它们,化学家们想出了很多的办法,人们发明新的技术来实现它,这些是最早遇到的一些问题,我们要稍微来,研究下它们的细节。
The ones that are most important in physiology are ones that only allow ions to go through: sodium, potassium, chloride, calcium, bicarbonate.
在生理学上这种,只能允许某种离子通过的通道十分重要,这些离子包括钠离子,钾离子,氯离子,钙离子和碳酸氢根离子
How can an all-powerful, good God allow so much evil to exist and even go unpunished?
怎么可能,一个万能的,善良的上帝会允许邪恶的存在,甚至不受到惩罚呢?
We'll shape like a puzzle piece that will allow me to go to the looks palette at top left and it's pretty self-explanatory.
我们将制作出一个拼图,让我去寻找左上角的调色板,它非常明显。
What I'm going to ask you to do is track what you're eating, and to go to a website that will allow you to enter all your eating, and then it will print out a dietary analysis of that.
我希望你们能记录每天吃的东西,然后到相关网站输入你的饮食记录,之后打印出饮食分析报告
In order for it to get inside the cells and go through them there have to be transporters which specifically allow glucose to pass into the cell and then out into our body.
为使其能进入并穿过细胞,肠上皮必须具有葡萄糖特异性的转运蛋白,使葡萄糖能够穿过细胞进入体内
Now, sodium and potassium don't ordinarily move across membranes, they're charged molecules, they can't dissolve, they can't permeate through a cell membrane, but they go through because there are channels that allow them to pass through in the membrane.
钠和钾通常是不能跨过细胞膜的,它们都是带电粒子,它们不能溶解在细胞膜中,不能渗透通过细胞膜,但它们之所以能通过细胞膜,全赖膜上离子通道的作用
N 2 So any chemist should be able to just look at n 2 and know that it's a triple bond, but that's not something that we've learned how did to do yet, so let's go ahead and start a new topic that's going to allow us to have some sort of sense of what the valence electron configuration, which includes whether something's a single or double or a triple bond can be figured out for any given molecule.
任何一个化学家都应该能够仅仅通过看到2,就知道它有一个三键,但是我们还没学习如何做到这点,因此下面我们就开始进入一个新的主题,它将使我们能够有一定的认识,对于价电子的排布情况,包括可以对任何一个给定分子中的键是单键双键,还是三键作出判断。
Then you go over here to where it says PDF and you click on that and that will allow you to download the whole article, which will look something like this.
之后找到并点击写着PDF的按键,这样就能下载全文了,就像这样
That RNA is made into proteins, and proteins are the working molecules of the cell, they're enzymes, they're structural molecules, they're are proteins that exist in the membrane that allow things to go in and out of the cell, so really the working molecules are the cell in every sense.
这些RNA指导合成蛋白质,蛋白质是细胞生命活动的承担者,它们可以是酶,或是结构性分子,也可以存在于细胞膜上的膜蛋白,能够让一些物质通过它们进出于细胞,所以蛋白质才是真正意义上,细胞生命活动的承担者
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