The Biology of Death: How Dying Shapes Cells, Organisms, and Populations by Gary C. Howard
Requirements: .ePUB reader, 14.3 MB
Overview: How does death help us understand the living?
Death is more than the last event of life; it is interwoven into our growth, development, protection against disease, and more. It influences the direction of entire species via the cycle of a lifespan, and it involves asking many fascinating questions. How do we differentiate between life and death, though? How do we know when a person, animal, or cell is really dead? How much grey area is there in the science? Why do we age? Can we do anything about it?
Scientifically, there’s much we can learn about a living thing from its cells. In all living things, cells seem to carry “death” gene programs. Some living organisms have created systems to use these to their own advantage. Humans, for example, use the death of specific cells to hone our immune system and to give us fingernails and hair. Perhaps the most dramatic use occurs during the metamorphosis of insects and frogs. Even single-celled organisms use “quorum sensing” to eliminate some cells to ensure the overall survival of their colony in harsh environments. Thus, there is more to death than just dying.
Genre: Non-Fiction > Educational
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