Suppose that the plasma membrane around a eukaryotic flagellum is opened to reveal the axoneme inside. The dynein arms between the peripheral microtubule doublets are removed by chemical treatment, and adenosine triphosphate (ATP) is added. Which of these would be the most expected observation?

The axoneme will elongate

Explanation:

The scenario above is to demonstrate the effect of Adenosine Tri Phosphate (ATP) on axoneme (central strand of a flagellum).

To prepare the sample the plasma membrane around a eukaryotic flagellum is opened to reveal the axoneme inside. The dynein arms between the peripheral microtubule doublets are removed by chemical treatment, and adenosine triphosphate (ATP) is added.

The axonemes tend to elongate up to nine times their original lenght.

This is due to the outer microtubule pairs sliding over one another. ATP binding causes dyenin to be released from walls of the adjacent tubule.

The tubules reattach farther down their lengths this resulting in elongation