Introduction to Cells and Tissues | Anatomy and Physiology I.pdf

MODULE 4
THE CELL
Current Module | Pages 32 - 45
Introduction to Cells and Tissues
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Anatomy and Physiology I:
Unit 3: Cells and Tissues
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Alternative Version
The cell is considered the basic unit of life because it is the first organizational
level in which all characteristics of life are observed. Cells need energy, can
reproduce, respond to stimuli, grow once produced, and are have specialized
compartments that do different jobs for the cell. The human body is made of
trillions of cells that ultimately came from a fertilized ovum. That one cell
contains all the genetic potential to become any cell in the body. The cells that
are produced from the fertilized ovum start to differentiate into specialized cells