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Biological & Biomedical Sciences
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English (U.S.)
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Topic:

Programmed Cell Death or Apoptosis

Essay Instructions:

In multicellular organisms, most cells created by mitosis are integrated into the organism's structure. This week’s lesson looks at what happens to cells that don’t integrate properly, that is not needed, or that fail certain quality-control checkpoints in the cell cycle. Watch the Apoptosis video, then address the following two issues:
*Describe at least two ways that apoptosis helps animals.
*What aspect of apoptosis do you find most interesting or significant? Explain.
Apoptosis Video Link:
https://www(dot)khanacademy(dot)org/science/biology/cellular-molecular-biology/stem-cells-and-cancer/v/apoptosis

Essay Sample Content Preview:
Programmed Cell Death
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Apoptosis
Apoptosis Video Link:
/science/biology/cellular-molecular-biology/stem-cells-and-cancer/v/apoptosis
According to the video, apoptosis refers to programmed cell death that occurs as one of the crucial evolutionary innovations of the eukaryotic cells. The programmed cell death (PCD) is essential in animal development, as in the case of C. elegans in which apoptosis on somatic cells occurs as an invariant fate. The process is controlled by cell lineage. During the development of hermaphrodite, 131 out of the total 1090 somatic cells die basically during embryogenesis and after cell division. The result is survival of all 131 cells in the loss of mutants for egl-1, ced-3, and ced-4, and cell death is blocked (Jaeschke et al., 2018). The primary role of apoptosis in animals is to remove any unwanted cells from the body. For instance, a tadpole utilizes apoptosis in its distinct stages through which their body structure transforms before reaching the...
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