Question

When a cilium or a flagellum emerges from a basal body, what moves building materials to the assembly site at the tip of the growing axoneme?

1) Kinesin
2) Dynein
3) Myosin
4) Actin

Answer 1

Kinesin is the motor protein that transports building materials to the assembly site at the tip of a growing cilium or flagellum. Option 1 is correct.

Step-by-step explanation:

When a cilium or a flagellum emerges from a basal body, the building materials are transported to the assembly site at the tip of the growing axoneme by the motor protein called kinesin.

Kinesin is a motor protein that is involved in the intracellular transport of cargoes, such as organelles, vesicles and proteins, along microtubule tracks using the energy provided by ATP hydrolysis.

The dynein motor protein, on the other hand, is responsible for the bending motion of cilia and flagella by walking along adjacent microtubules, which causes the sliding action necessary for movement.

When a cilium or a flagellum emerges from a basal body, the motor protein dynein moves building materials to the assembly site at the tip of the growing axoneme.