Every organism has cells
by Stacey Hubbard
1. Single Celled Organisms
1.1. Does all the jobs by its self for life.
1.2. Ex; Parmecium
1.3. Simple
1.4. Amoeba
2. Multicellular Organisms
2.1. Complex
2.2. Tissue
2.2.1. Organs
2.2.1.1. Organ System
2.2.1.1.1. Cardiovascular System
2.2.1.2. Heart
2.2.2. Heart tissue