Celluar Aging

Match the definitions and key words with the group name (programmed or stochastic). From the drop down boxes, choose the correct letter (A — Programmed or B — Stochastic).

  – A. B.

Celluar Aging: suggesting that the lifespan of a species is determined by an internal cellular “clock” that limits the number of cell divisions. 

  – A. B.

Immune System: suggesting that aging is due to a break-down in the body’s natural defense system against bacteria, viruses, and other substances.

 – A. B.

Error Theory: suggesting that errors at the cellular level produce “faulty” molecules.

 – A. B.

Evolutionary theory: suggesting that aging is a natural way to limit the reproductive potential and timespan of members of a species.

 – A. B.

Wear and Tear: suggesting that like a battery or a machine, the human body has a limited amount of energy and will eventually break down when drained.

 – A. B.

Build-up of Damaging Substances: suggesting that the accumulation of “waste products” in cells can damage important substances (like collagen) and disrupt normal physiological processes.

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