In this article we will discuss about the free energy of activation and the role of catalysts. An exergonic reaction is a spontaneous reaction; it can therefore yield energy usable for chemical, mechanical or electrical work. However, it should be remembered that spontaneous does not mean rapid, but only without external energy input. A spontaneous exergonic reaction can be extremely [...]
In this article we will discuss about the role of phospholipids. Biological membranes are mainly formed by proteins and lipids. In the latter group of constituents, phosphatides and cholesterol are the quantitatively dominant substances. The physical state of phosphatides varies with the temperature. Between the true liquid state and the solid state, these lipids pass through states in which they [...]
In this article we will discuss about the role of enzymes as surfactants in making detergents. The surfactants are the surface-active-agents which decrease the tension between molecules lying on the surface of a liquid. The first patent for use of enzymes in detergent was granted in 1913.It was a crude extract of pancreas (pancreatin) in a solution of sodium carbonate. [...]