Which of the following is $NOT$ found in a prokaryotic cell?

Read the following statements regarding Mesosomes:
$I -$ They are in the form of vesicles,tubules,and lamellae.
$II -$ They are formed by the extensions of the cell wall.
$III -$ They help in increasing the enzymatic content.
$IV -$ They are associated with respiration and secretory processes.
Which of the following options is correct for Mesosomes?

Which of the following is formed due to the extension of the plasma membrane into the cell in prokaryotes?

Mesosome in a bacterial cell is

The genetic material present in $E. coli$ bacteria is .......

The smallest prokaryotic cell is .......