Question

The motile bacteria are able to move
A. Fimbriae
B. Flagella
C. Cilla
D. Pili

Answer 1

Hint: In all eukaryotes flagella bodies present in it that motile in the whip-like manner. And the base part of the flagellum attached to the basal bodies and present organ of motility in the bacterial surfaces. Flagellum bodies can rotate in clockwise and counterclockwise directions. The cause of the flagella motion water currents necessary for the circulation and respiration in sponges and coelenterate.

Complete answer:
Flagellum bodies’ structure shaped like hairpin that act as an organelle of locomotion in the many living organisms. Protozoan group mastigophora is a characteristic by which flagella occur on the fungi, mosses, gametes of algae and slime molds.
But there are many differences in the movement pattern of the structure of the prokaryotic cells and eukaryotic cells. Eukaryotic cells have many flagella and closely resemble the cilium part of the structure. In eukaryotic there are no pairs of microtubules present and each microtubule is composed of the protein tubulin. On the other hand prokaryotic flagella are helically shaped and composed of the protein flagella.
ATP (adenosine triphosphate) plays a vital role in the energy source of the eukaryotic flagella and on the other hand proton motive forces, ions are the energy source present in the prokaryotic flagella. The Flagellum plays a vital role in locomotion and being sensitive to temperature outside the body.

Therefore the correct option is (B).

Note: Reynolds number used to predict the locomotion of microscope for the cylinder shape flagella. To find the locomotion of the flagellum in water mass inertia is less important than the viscosity. The rotational speed of Flagellum depends upon the intensity of proton motive force. In different species like lophotrichous bacteria have multiple flagella and amphitrichous bacteria have a single flagellum.