D) option. It's A tubules. A tubule has dynein protein that has ATPase activity. It converts ATP into ADP and iP and energy is released that is used in the movement of cilia and flagella.

Enzymatic Protein in Flagella and Its Association with Tubules

The enzymatic protein present in flagella is called ATP synthase, which has the ability to hydrolyze ATP. This protein is associated with the arm of the flagella, which is responsible for the movement of the flagella.

The flagella is composed of three main structures: the basal body, the hook, and the filament. The basal body is embedded in the cell membrane and extends into the cytoplasm. It consists of a series of rings and a central rod. The hook is a flexible structure that connects the basal body to the filament. The filament is a long, whip-like structure that extends from the hook and is responsible for the movement of the flagella.

The filament is made up of a series of protein subunits called flagellin. The flagellin subunits are arranged in a helical pattern around a central channel. The channel is lined with the enzymatic protein ATP synthase, which hydrolyzes ATP to provide the energy for the movement of the flagella.

The ATP synthase is associated with the arm of the flagella, which is composed of the A and B tubules. The A tubule is connected to the basal body and the B tubule is connected to the hook. The ATP synthase is located on the inner surface of the B tubule and is responsible for the hydrolysis of ATP.

In conclusion, the enzymatic protein ATP synthase is associated with the arm of the flagella and is responsible for the hydrolysis of ATP. It is located on the inner surface of the B tubule, which is connected to the hook of the flagella.