The 5 levels of organization refers to a method for describing how the cells in a multicellular organism interact with each other for the good of that organism. The 5 levels are; 1) individual cell, 2) tissues (made of individual cells), 3) organs (made of tissues), 4) organ systems (multiple organs working together for a specific process), and 5) organism (an entire living thing). http://utahscience.oremjr.alpine.k12.ut.us/sciber00/7th/cells/sciber/levelorg.htm
The five levels of organization among organisms are: cells, tissues, organs, organ systems and organisms. Cells make up tissues, tissues make up organs, organs make up organ systems and ultimately organ systems make up organisms.