What helps Helicobacter pylori to move?

Helicobacter pylori is a type of bacterium that possesses flagella, which are long, whip-like structures that extend from the cell body. The flagella enable the bacterium to exhibit a motile behavior, allowing it to move through viscous environments, such as the mucus layer of the stomach. This motility is crucial for it to colonize the gastric epithelium, thereby facilitating its survival in the harsh acidic conditions of the stomach.

While the other structures mentioned, like fimbriae, endoflagella, and pili, serve important roles in bacterial adhesion and motility in other contexts, they are not the primary means of movement for Helicobacter pylori. Fimbriae and pili primarily help with adhesion to surfaces and other cells, while endoflagella, found in spirochetes, provide a different mode of motility not applicable to Helicobacter pylori. Thus, flagella are specifically responsible for the locomotion of Helicobacter pylori, making them the correct answer.