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I was a college student of physics ten years ago, and recently started to learn biochemistry. I enjoy finding out that some familiar concepts in physics play important roles in biochemistry such as Entropy and Gibbs free energy.
For example, as a (ex-)student of physics, I am happy to know that Gibbs free energy helps to decide the directions of chemnical reactions. I feel this is a good example where a sort of fundamental law of physics determines how phenomenon looks like.
However, I still can not understand why the chemical reactions in a body need to be so complex. Many chemnical systems consists of more than several steps to acheive their purposes. According to wikipedia, glycolysis takes ten steps through its process. Why so many steps are necessary?
I tried to find out a physical law which prohibit that glycolysis process is achieved by one or two steps. But I could not find an answer.
I would like to know (or discuss) whether there is a physical law which makes the chemical system such a complex one (many steps required).
My assumption is that some physical law prohibit the existence of a enzyme which realize a one-step process of glycolysis.