Functions+of+Organisms

The Seven Functions All Living Things Must Perform are...
**M**ovement - All living things move. **R**espiration - Plants and animals use oxygen in the air to turn food into energy. THIS IS NOT BREATHING. **S**ensitivity - All living things notice changes in the environment around them and react.

**G**rowth - All living things grow. **R**eproduction - All living things reproduce. **E**xcretion - Waste products are removed. **N**utrition - Living things need nutrition - whether it is obtained or if they produce it (photosynthesis). Another difference between living and non-living things is that **all living things are made up of one or more cells**. These basic units can perform all 7 processes associated with life. Organisms must perform 7 functions (MRS GREN) in order to survive. MRS GREN is an acronym to help us remember those 7 functions.