Cell (biology)
The cell is the basic structural and functional unit of living organisms, and is a fundamental concept in Biology. All living things are composed of one or more cells, which are capable of reproducing themselves and maintaining their own vital functions. Cells are the smallest units of life that can exist independently, and are often referred to as the "building blocks of life". The study of cells is known as Cell biology, and involves the use of various techniques such as Microscopy and Experiment to understand the structure and function of cells. Cells are classified into two main types: Prokaryotic cells and Eukaryotic cells, which differ in their internal structure and organization. The study of cells has led to a greater understanding of the Natural world and has numerous applications in fields such as Medicine and Research.