Assemble into multicellular organisms
Establish symbiotic relationships with other organisms
Obtain energy from the Sun
Store genetic information in the form of DNA
New cells are produced by division of existing cells.
All organisms are composed of more than one cell.
Cells must contain a nucleus.
Not all cells are alive.
Substances are moving rapidly across the cell membrane.
ATP is being rapidly consumed near the cellular membrane.
Substances are moving from high to low concentrations.
Substances are moving through channels in the cell membrane.