Question

Which of the following has ATP-ase activity in flagella

• A. Tubulin
• B. Kinetosome
• C. Dynein arms
• D. Actin

Answer 1

The Correct Option is C

• Dynein arms are intricate structures composed of units of dynein proteins, which function as ATPases, enzymes responsible for hydrolyzing ATP to produce energy. 
• These dynein arms are found in the flagella of various organisms, ranging from single-celled organisms like Paramecium to multicellular organisms like humans (in sperm cells).
• Each flagellum possesses dynein arms, which utilize ATP hydrolysis to generate energy. 
• This energy is then transmitted through microtubules, ultimately facilitating the forward movement of the flagella. 
• Consequently, dynein arms and their ATPase activity play a pivotal role in the motility of organisms.