signerer a 3. Important vocabulary continued: what is the difference between a unicellular organism and a multicellular organism?

The main difference between a unicellular organism and a multicellular organism is the number of cells that make up their body.<br /><br />A unicellular organism is an organism that consists of only one cell. This single cell performs all the necessary functions for the organism's survival, such as obtaining nutrients, converting them into energy, and eliminating waste. Examples of unicellular organisms include bacteria, archaea, and many types of protists.<br /><br />On the other hand, a multicellular organism is an organism that is composed of multiple cells. These cells are organized into tissues, organs, and organ systems, each with specific functions that contribute to the overall functioning of the organism. Multicellular organisms include animals, plants, and fungi.<br /><br />In summary, the key difference between unicellular and multicellular organisms is the number of cells that make up their body, with unicellular organisms consisting of only one cell, while multicellular organisms are composed of multiple cells.