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.
Analogy
Imagine if your skin was made out of hard plastic instead of soft tissue - it would protect you from physical harm much more effectively but limit your movement. That's what a cell wall does for plant cells; it provides extra protection but also gives them their rigid structure.
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.
"Cell Walls" appears in:
Study guides (2)
Practice Questions (2)
- The cell walls of plants are primarily made of cellulose. What type of organic molecule is cellulose?
- The cell walls of plants are primarily made of cellulose. What type of biological molecule is cellulose?
Resources
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.