单词：passive-active cell
单词：passive-active cell 相关文章
Today's topic is active voice versus passive voice. Here's Brian from Iowa: It drives me crazy when people write in passive voice. How can I teach people how to tell the difference between passive and active voice and stay away from passive voice? Th
英语语法 Grammar Girl
by Mignon Fogarty Today's topic is active voice versus passive voice. The podcast edition of this article was sponsored by GoToMeeting. With this meeting service, you can hold your meetings over the Internet and give presentations, product demos and
英语语法 Grammar Girl
If the human genome were put in a straight line, it would be over six and a half feet long. So how do you store all that DNA in a tiny nucleus? And have the cell manage it? Researchers explain how in a study featured on the cover of the October 9th i
Scientific American(十)月
Genome: Now in 3-D! In a study in the journal Science, researchers report the mapping of the three-dimensional structure of the human genome, and the finding that the cell's nucleus is divided into two regions, one where DNA goes to get expressed. Cy
60秒科学
So how can a hormone ultimately affect the rate of aging? 那么，激素到底是怎样影响衰老的速度呢？ How could that work? 原理是什么呢？ Well it turns out that in the daf-2 mutants, 原来在daf-2变异体中 a whole lot of gene
TED演讲科学篇