CONTROLLING THE
ANIMATION:
Wait for the animation to load completely and
play through once. To stop the animation, click on the "pause" button. To see
the frame that precedes the paused frame, press the "previous" button. To
see the frame that follows the paused frame, click on the "next" button.
To resume the animation, click on the "play" button.
PROCEDURE:
1) Advance the animation to the frame showing the first phase of
the cilium's power stroke. NOTE: Power stroke phases for
the cilium are shown in green.
2) If the black base to which
the cilium is attached was a freely swimming organism, in which direction would
the power stroke tend to propel the organism? [To the left, or to the
right?] In which direction would water tend to be moved by the power
stroke of the cilium?
3) Next, advance the animation to view
recovery stroke phases, shown in red. What is different about the
cilium's orientation during the recovery stroke, as compared to the power
stroke. Explain how these differences in configuration contribute to the
efficiency of ciliary
propulsion..
Click here to see
non-interactive GIF animation
Software
for controlling interactive animations was developed by TOM
DREWES
