Apoptosis means programmed cell death and involves a sequence of steps in which a cell terminates itself.

Apoptosis
Apoptosis Wikipedia.org Article with illustrations; click to enlarge.
Apoptosis
Apoptosis, Uploaded by bowlerdude, YouTube.com, Video length: 04:38,
Apoptosis
Apoptosis, By Regina Bailey, ThoughtCo., Article with an image.
Apoptosis
Apoptosis, Kimball's Biology Pages, Combination of text and illustrations.
Apoptosis
Apoptosis, By CancerQuest.org, Animation length: 0:39.
Apoptosis
Apoptosis, By David Darling, Illustration and brief description.
Apoptosis
Apoptosis Bio-Alive There are several brief videos on apoptosis in different circumstances.
Apoptosis: Dance of Death
Apoptosis: Dance of Death, CellsAlive.com, Animation and text explaining apoptosis.
Cell death: Necrosis and Apoptosis
Cell death: Necrosis and Apoptosis, By Susana Halpine, Cell death animation with text explaining the steps.
Cell Suicide: An Essential Part of Life
Cell Suicide: An Essential Part of Life, February 23, 2011, By Stephanie Dutchen and Kirstie Saltsman, National Institutes of Health, LiveScience.Com, Combination of text and images.
What is Apoptosis?
What is Apoptosis?, Written by Tricia Ellis-Christensen, Wisegeek.com, All-text article.
What is apoptosis?
What is apoptosis?, How Stuff Works, Combination of text and illustration.