Question

22.Difference between a cell membrane and cell wall​

Answer 1

Answer:

1. cell membrane was discovered by Theoder schwann in 1839 .
2. cell membrane is also called as plasma membrane , plasma lemma etc.
3. plasma membrane was coined by Nageli & Cramer in 1855 & plasma lemma was coined by Plowe in 1831
4. It is living , asymmetric , quasifluid , dynamic & fluid in nature .
5. It is selectively permeable / semi permeable

1. Cell wall was discovered by Robert Brown in 1665
2. It has primary & secondary wall
3. it is present in prokaryotes , some protists , plants etc.
4. it is non living , rigidity etc. in nature .
5. it provides shape to cell .
6. it protects the cell from infections , physical stresses etc.
7. it counteracts with osmotic pressure .
8. it acts as a barrier for undesirable macromolecules