MCQ
In $ETS$, electron combines to
- ACytochrome
- ✓$H_2$
- C$O_2$
- D$H_2O$
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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.