what is cell ?
In biology, a cell is the fundamental structural and functional unit of all living organisms. It is the basic building block of life. Cells are microscopic, highly organized structures that carry out essential functions necessary for the survival and reproduction of living organisms. Here are some key features and characteristics of cells: Structure: Cells are enclosed by a semi-permeable membrane known as the cell membrane, which separates the cell's interior from its external environment. Inside the cell, there is a jelly-like substance called cytoplasm, where various cellular components are suspended. Genetic material : Cells contain genetic material in the form of deoxyribonucleic acid (DNA), which carries the genetic instructions needed for growth, development, and functioning. Types: Cells can be classified into two main categories based on the presence of a nucleus: prokaryotic cells and eukaryotic cells. Prokaryotic cells (e.g., bacteria and archaea) lack a membrane-boun...