Levels are important for the structure and function of living things.

ex: cells, tissues, organs, organ systems, whole organisms.

 

Basic parts, organs and systems allow for body to provide cells with basic needs to live.

Cells in the body vary and are grouped based on their function.

All living things are made of one or more cells and can carry out life functions.

Organelles in single cell organisms have similar functions as multi cellular organisms.

Homeostasis is achieved in single celled organisms, by using cell organelles.