Which type of cell lacks a membrane-bound nucleus?

Which of the following is absent in a prokaryotic cell?

Which of the following statements about a bacterial cell is/are correct?
$(i)$ Mesosome is formed by the extensions of plasma membrane into the cell.
$(ii)$ The pili are elongated tubular structures made up of a protein.
$(iii)$ Flagellum is composed of filament,hook,and basal body.
$(iv)$ Ribosomes are about $30 \; nm$ by $50 \; nm$ in size.

$A$ bacterial flagellum is composed of

Which of the following shows the absence of cytoplasmic streaming?

$A$: Some bacteria possess unique phenotypic characters.
$R$: Many bacterial cells contain plasmid $DNA$ in addition to genomic $DNA$.