Levels of Cell Organization
Cook, M. (2019, May 29). Levels of Cell Organization. Sciencing. https://sciencing.com/levels-cell-organization-6515549.html
With the exception of single-celled organisms and very simple life forms, living things have complex bodies that contain many functional parts. You can organize these parts into different levels of complexity or cellular organization. They range from the smallest, simplest functional units of living things to the largest and most complex. To continue reading, follow the link above.