Question

relative to the cell, the bacterial \boxed{} is a long tubular structure that can spin, thereby resulting in cell motility. need help? review these concept resources. read about the concept

Explanation:

In biology (a subfield of Natural Science), bacterial flagella are long, tubular structures that can rotate (spin) to enable the bacterium to move (cell motility). This matches the description in the question.

Answer:

flagellum