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Question

Biology Question on Kingdom Monera

Which of the following has ATP-ase activity in flagella

A

Tubulin

B

Kinetosome

C

Dynein arms

D

Actin

Answer

Dynein arms

Explanation

Solution

  • 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.