Cells are the basic units of life and form the first level of organization. A cell is also the smallest unit of life. The name cell is Latin for cella, meaning “small room” is the basic structural, functional, and biological unit of all known living organisms. Cells are often called the “building blocks of life”.  Cells within the human body have specific functions, examples of this include nerve cells, blood cells, liver cells, and so on. Cells themselves are made of various macromolecules that form organelles. Each organelle in a cell has a defined role, which makes a cell capable of delivering what it is designed to do.

Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids. Organisms can be classified as unicellular (consisting of a single cell; including bacteria) or multicellular (including plants and animals). While the number of cells in plants and animals varies from species to species, humans contain more than 10 trillion cells. Most plant and animal cells are visible only under a microscope.

The cell contains various structural components to allow it to maintain life which are known as organelles. All the organelles are suspended within a gelatinous matrix,