What is the basic unit of life?

The basic unit of life is the cell. Cells are the smallest structural and functional units of living organisms. They carry out the essential processes necessary for life, such as metabolism, growth, and reproduction. All living things, whether unicellular (like bacteria) or multicellular (like plants and animals), are made up of cells.

Tissues, on the other hand, are groups of similar cells that work together to perform a specific function. Organs are made up of different types of tissues that coordinate to carry out complex functions. An organism is a complete living entity that can exist independently, comprised of one or more cells. Therefore, the cell is recognized as the foundational building block of all life forms.