MCQ
The main difference in Gram (+) ve and Gram (-) ve bacteria resides in their:
- ACell wall.
- BCell membrane.
- CCytoplasm.
- DFlagella.
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$R$ : It has a pair of peripheral doublet and a pair of centrally located microtubules.

| container | observation |
| $1$ | cell burst |
| $2$ | cell does not change its shape |
Which structure maintains the shape of the cell present in container $2$ and provides the most significant difference between the two cells?