| A | B |
| homeostasis | keeping a stable internal environment |
| cell | basic unit of life |
| tissue | group of different cells that work together to perform a specific job |
| epithelial | cells that surround and protect |
| muscle | cells that allow movement by contracting and expanding |
| nerve | cells that conduct electrical impulses |
| red blood cells | transport oxygen and waste throughout the body |
| white blood cells | protect the body from germs |
| connective | tissue that supports, protects and transports materials |
| muscular | tissues that allows for movement |
| nervous | tissue that allows electrical conduction |
| epithelium | tissue that covers and protects the inside & outside of the body |
| skeletal | special connective tissue that supports and protects the body |
| unicellular | organisms that are composed of one cell |
| multicellular | organisms that are composed of more than one cell |
| nucleus | control center of the cell |
| specific function | each cell has its own special job |
| cell specialization | different cells have different jobs |
| cell wall and chloroplast | only found in plant cells |
| cardiac muscle | involuntary muscle in the heart |