‘The life of cells’ explains the ‘cell cycle’ by considering the processes involved. Firstly, the cell needs to duplicate all of its molecules. At the organelle level, several hundred mitochondria, large areas of endoplasmic reticulum, new Golgi bodies, cytoskeletal structures, and millions of ribosomes need to be duplicated so that the daughter cells have enough resources to grow and then divide themselves. The cell cycle is divided into an interphase, the period between cell divisions, and mitosis, the process of separation into two daughter cells. These phases are described with explanations of meiosis, DNA replication, and transcription. How cells move, how old they are, and how they die are also discussed.