Cell Walls

Definition

Cell walls are rigid layers surrounding some types of cells providing structural support and protection. They're found outside the cell membrane in plant cells, bacteria, fungi, and some protists.

Related terms

Cell Membrane: This is the semi-permeable barrier that surrounds all living cells controlling what enters or leaves the cell.

Prokaryotic Cells: These are simpler types of cells without an enclosed nucleus or other organelles except ribosomes. Bacteria is an example of prokaryotes.

Chloroplasts: These are organelles found in plant cells where photosynthesis occurs.