Biology The study of life, my review
=> asked by Eileen
All living things are made up of one or more cells that carry on life-sustaining metabolic processes.
Two types of cells: Prokaryotic-without membrane-bound organelles. Eukaryotic-with a membrane-bound nucleus and other distinct organelles.
Organ System is a group of organs that work together to perform a specific function.about 3 years ago, by Eileen