The appendages of bacteria are called ..........

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.

Which of the following is a characteristic of a prokaryotic cell?

Which of the following is not a structure of prokaryotic flagella?

Genes which confer antibiotic resistance on bacteria are located on

Identify $P$ from the figure.