* Unicellular organisms are made up of a single cell that carries out all the functions necessary for life. Examples include bacteria, amoebas, and yeast.
* Multicellular organisms are made up of many cells that work together to form tissues, organs, and organ systems. Examples include plants, animals, and fungi.
While the basic structure of a cell is similar across all life forms, the cells in multicellular organisms are specialized for specific functions, leading to greater complexity and diversity.
