The Science of Life

In this weeks blog, I will describe the second law of thermodynamics and how it applies to biochemical mechanisms. There seems to be a lot of confusion, misunderstanding, and downright misrepresentation of this topic, so the intent here is to clarify everything. The second law of thermodynamics states that the entropy always increases for spontaneous processes. Notice here that the reference frame is not specified. This is because, in most scientific realms, the context is assumed to either be an isolated system or the universe as a whole. Also notice that I said entropy always increases for a spontaneous process. For non-spontaneous processes, the entropy decreases. I will talk about spontaneous thermodynamic processes in this blog. Later today, I will post a an entry in my other blog talking about non-spontaneous thermal processes. The Second Law of Thermodynamics tells us whether a process is spontaneous or not. This is based on the h...