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, and they are responsible for carrying out all the essential processes necessary for life. Each cell can perform functions such as metabolism, growth, reproduction, and response to stimuli, all crucial for maintaining life and enabling the organism to function.

While organs, tissues, and organisms are all important levels of biological organization, they are composed of cells. Tissues are groups of similar cells that work together to perform a specific function, while organs consist of different tissues that coordinate to execute complex tasks. An organism is the whole living entity made up of various cells, tissues, and organs working in harmony. Thus, the cell is recognized as the fundamental building block of life, highlighting its critical role in the existence and function of all living beings.