Chemistry of Life: From Fertilization to Death

Human life starts with the fertilization of sperm with egg and ends when all the body functions cease to work. This whole time span is a complex combination of chemical reactions and processes, taking place frequently and continuously. A very important thing to be kept in mind before reading the article is that the terms steroids, carbohydrates, lipids, proteins, enzymes, hormones, DNA, RNA etc., wherever used in the article, are all chemical compounds or macromolecules composed of chemical entities, in other words, it’s all about chemistry.