2. It protects the cells from mechanical injury.
3. It wards off the attacks of pathogens (viruses, bacteria, fungi, protozoans) and protects from infection.
4. It allows the transport of materials in and out of the cell.
5. The cell wall helps in cell to cell interactions.
Define the following :
1. Nucleoid
2. Eukaryotic cells
3. Cristae
4. Mitochondrial matrix.