atom
fundamental unit of matter
molecule
joined atoms
biomolecule
a large molecule, often consisting of many repeating small molecules
organelle
groups of different biomolecules that work together to perform a function in a cell
cells
fundamental unit of life, contains genetic material, enclosed by a membrane, can reproduce
tissue
many cells of the same type that that work together
organ
tissues working together to perform a task
organism
a living individual being, composed of organs that work together
population
a group of the same organisms living in a particular region
community
many populations living and interacting together
ecosystem
a community and the nonliving things around it
biosphere
all life on earth
6 characteristics of life