Cell wall is the outermost boundary in plant cell whereas plasma membrane or cell membrane is the outermost boundary in animal cells. In a plant cell, cell membrane is found in the inner side of the cell wall.
- Cell membrane is present in all cells.
- Cell wall is absent in animal cells.
- Cellulosic cell wall in plant cell wall.
- Peptidoglycan cell wall in bacterium.
- Chitinous cell wall in fungi.
Cell wall vs Cell Membrane
|It is a rigid, thick structure (4-20 uM) and visible in light microscope.||It is delicate, thin structure (5-10 nm wide) visible only in electron microscope.|
|It is the outermost layer in plant cell and occurs as a protective covering surrounding the plasma membrane.||It is the outermost layer in animal cell and occurs as a semi permeable covering surrounding the protoplasm.|
|Cell wall is made up of cellulose in plant cell wall. |
Cell wall is made up of peptidoglycan in bacterium.
Cell wall is made up of chitin in fungi.
|Plasma membrane is made up of lipids proteins and small amount of carbohydrates.|
|It is completely permeable to ordinary macromolecules.||It is selectively permeable or semi- permeable allowing only certain molecules to pass through.|
|It occurs in plant cell, bacterium and fungus.||It occurs in all cells.|
|It is metabolically inactive and non living.||It is metabolically active and living.|
|It determines the cell shape and offers protection.||It protects the protoplasm and maintains a constant internal environment to the protoplasm.|