Relier Pairs Levels of OrganizationVersion en ligne Match the level of organization with its definition par Anna Fox 1 The basic unit of life 2 A single individual or living thing 3 The basic building block of matter 4 Multiple organisms of the same species that live in the same area 5 A part of a cell that does a specific job. 6 A group of tissues in a living organism that work together to perform a specific function. 7 A group of cells that perform a specific function 8 Multiple atoms bonded together 9 A group of organs that work together to perform specific functions.