BiologyWise
Biology Wise: Diagram of Plant Cell and Functions of Its Organelles
Provides a labeled diagram of a plant cell and descriptions of the characteristics and functions of many of its organelles.
Bio Topics
Bio Topics: Cell Structure
A reference site exploring cell structure. Learn about the structures and functions of the major organelles of the cell. Also included are research questions to better understand the cell.
Biology 4 kids
Biology4 Kids: Cell Wall What's It For?
A brief article which describes and illustrates the structure and function of cell walls in plant cells.