MCQ
Nucleic acids are:
- ✓Polymers of nucleotides
- BPolymers of nucleosides
- CPolymers of purine bases through phosphate ester bonds
- DPhosphate ester bonds
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$(i)$ Provides shape to the cell.
$(ii)$ Protects the cell from mechanical damage and infection.
$(iii)$ Helps in cell to cell interaction.
$(iv)$ Provides barrier to undesirable macromolecules.
Choose the correct option for $A$ and $B$ to complete the given $NCERT$ statement