JAMB - Biology (2014 - No. 1)

The lowest level of organization in living organisms is the cell. This means that a single cell is the basic unit of life and the smallest structure capable of performing all life functions.

• Cell definition: A cell is a self-contained unit with all the necessary components to carry out life processes, including a nucleus to store genetic material, organelles for specific functions, and a cell membrane to maintain its internal environment.

• Levels of organization: After cells, the next levels of organization in living organisms are tissues (groups of similar cells), organs (groups of tissues), organ systems (groups of organs), and finally the whole organism