The Levels of Organization
cell is the basic unit of structure, Cells are specialized by size and shape, Red blood cells , volox, and amoeba
Tissues are made of a group of similar cells, that work together to do a specific job in the body. epithelial, muscle, nervous, and connective.
Organs are made up of two or more tissues,that work together to do a specific job.
Sum of all cells, tissues, organs and organ systems makes an organism. An organisms is made when a group of organ systems work together. people, fish , animals
the cells make the tissues the tissues. the tissues make the organs the organs make the organism . if We did not have the cells we will not have a human body or any other organism.