BiologyWise
Biology Wise: The 7 Unmistakable Characteristics of Life
Describes the seven characteristics that define life - cells, homeostasis, heredity, use of energy, reproduction, response to environmental stimuli, and evolution and adaptation.
Science4Fun
Science4 Fun: Cell
Gather information about prokaryotic and eukaryotic cells and also the main parts and organelles of a cell.
CK-12 Foundation
Ck 12: Biology: Cell Biology
[Free Registration/Login may be required to access all resource tools.] Introduces cells, cell theory, and the levels of organization in organisms.
Ducksters
Ducksters: Biology for Kids: The Cell
Kids learn more about the science of the cell. Smallest biological form of life.
Curated OER
Micscape Article: Paramecium
Excellent article on a unicelluar organism, the paramecium. Includes details on its environment, paramecium types, and environmental importance.
Curated OER
Science Kids: Science Images: Cells
This photo shows an enhanced microscopic view of cells.