Within multicellular organisms, tissues are organized ... essential to tissue maintenance and repair. The spatial organization of the cells that form a tissue is also central to the tissue's ...

Integrative levels of organization allow researchers to ... and organ systems within the organism. The cell is thus no longer in isolation, and its integration into a system provides that system ...

Some organisms consist of only one measly cell, but even so ... in eukaryotes is similar to the many rooms and complex ...