Do all bacteria have flagella?

Flagella:

1. Flagella is the plural term for flagellum.
2. A flagellum is a hairlike appendage that provides motility to the cell.
3. They are microscopic in nature.

Flagella and bacteria:

1. All bacteria are known to contain flagella.
2. Bacterial flagella are coiled, thread-like structures, which comprise a rotary motor at their base.
3. They constitute the protein flagellin.
4. A shaft is present between a hook and basal body which passes through protein rings in the cell membrane.