The video shows a close-up of a cell. The cell is composed of various parts, including a nucleus, mitochondria, and other organelles. The nucleus is the control center of the cell, where DNA is stored and genes are transcribed. The mitochondria are the powerhouses of the cell, where energy is produced through cellular respiration. Other organelles, such as the Golgi apparatus, are involved in the production and transport of proteins and other substances. The cell is surrounded by a membrane, which is a thin layer that encloses the cell and regulates its interactions with the outside environment. The cell is constantly moving and changing, as it carries out its normal functions.