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Module 1: Teoría celular

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Cómo la teoría celular se relaciona con la supervivencia

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Biology - How cell theory relates to survival

How cell theory relates to survival

Computer-enhanced image of cells lining the gut.

View the video, cells are clearly visible in this cross section of a plant
stem seen through the microscope

View the video of frog embryo cells dividing (speeded up by time-lapse
video)

Schleiden and Schwann put forward the cell theory in 1839:

* All living things consist of one or more basic functional units -
called "cells" - and their products.

* New cells are produced from existing cells.

The survival of organisms depends on the survival of the cells of which
they are largely composed. Despite changes that occur in the external
environment, the internal conditions of cells must be stable enough for
cell processes to occur.

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