Pinocytosis and phagocytosis are absent in

Which structures perform the function of mitochondria in bacteria?

In which organisms are prokaryotic cells found? Give information about the diversity of their shapes.

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.

The site of respiration in bacteria is

Prokaryotic flagella possess