Monday, 7 January 2008

What does a "Pi" molecule refer to?

In maths, the answer would be quite straightforward - Pi is the ratio of the diameter of a circle to its circumference. Quite a magical number, and revered by some of the ancient Greeks. But that, unfortunately is not where the story ends.

Incredibly, "Pi" is used in a completely different way in biology. It symbolises a phosphate* group (PO4-). Thus, in reactions involving ATP's breakdown, you often see an equation like this:

ATP → ADP + Pi


* Not to be confused with phosphorus (P) - the atomic element which forms part of any phosphorus group.

4 comments:

  1. Prayer is not asking. It is a longing of the soul. It is daily admission of one's weakness. It is better in prayer to have a heart without words than words without a heart. See the link below for more info.

    #asking
    www.matreyastudios.com

    ReplyDelete
  2. Love it! very interesting topics, I hope the incoming comments and suggestion are equally positive. Thanks for sharing information that is actually helpful.

    Sol
    www.gofastek.com

    ReplyDelete
  3. First time I commented in a blog! I really enjoy it. You have an awesome post. Please do more articles like this. I'm gonna come back surely. God bless.

    www.imarksweb.org

    ReplyDelete
  4. Nothing remain forever. Then why to keep same patter of work again and again. Why to repeat same strategy for very essay. Use differ strategy for different subjects because every subject has its own meaning. Keep such posts on.ถั่ง เช่า pantip

    ReplyDelete