The site of respiration in bacteria is ................

What is the small,circular,extrachromosomal $DNA$ molecule found in a bacterial cell,separate from the main genomic $DNA$?

In bacteria,the mesosome is a specialized structure formed by the invagination of which component?

In $Prokaryotes$,the $glycocalyx$ when it is thick is called:

Statement $X$: Prokaryotic cells do not separate after division.
Statement $Y$: They are surrounded by a slimy substance secreted by the cell.

Which of the following structures in a prokaryotic cell is $NOT$ formed by the extension of the plasma membrane?