Death+by+Design+Notes-CMP

cell: the ultimate unit of life
 * Death by Design**
 * everything in the world is a cell or is made up of cells

plants and animals individual cells do everything that animals do--move, eat, kill, regenerate...
 * most plant cells look like squares with walls in between them
 * most animal cells are circular with things that look like soap bubbles in between them
 * come together in "communities" that we call plants or animals
 * before a collection of cells is useful for an organism, the behavior of every cell has to be control.

how do cells talk to each other?
 * they send signals to one another
 * cancer cells get the signal to die, but don't listen
 * don't do anything unless they're signaled to do it

experiment: if you take one cell away from all the other cells, it still dies