1. What is the flagellar axoneme? Illustrate your description with a well-labeled, cross-sectional view, which indicates which component(s) form the "central core."

2. What chemicals must be present to elicit motility in this preparation?

3. How are flagellae thought to move? Briefly describe the mechanism and provide one piece of experimental data in its support.

4. What aspects of flagellar motility are currently not well understood or not adequately explained by the mechanism you described above?

5. Carefully describe the axonmene and core behavior in the video. Based on your answers to the first two questions above, hypothesize how the core behavior might contribute to flagellar movement.