👉 A flagellist is a type of cell that contains flagella, which are long, thin, segmented filaments. These flagella play an important role in the movement of cells and can be found on various types of bacteria, including Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), and other Gram-negative bacteria. Flagellates have a unique surface that allows them to attach themselves to other cells or move along their cell membrane.