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The Human Cell 101 - Simple to understand

The Human Cell 101

Cell Parts

Differing in size, shape, and function, the cell is the smallest functional unit of tissues and organs - Each cell is somewhat self-contained and self-maintaining:

–    It can take in nutrients, convert these nutrients into energy, carry out specialized functions, and reproduce

–    Human cells have a surrounding protective membrane - enclosing a salty, watery cytoplasm in which is floating a set of membrane-bound organelles ("little organs"), which perform a number of vital functions for the cell.

For example:

✔ The cell nucleus houses DNA - the cell's genetic blueprint containing the building instructions for various protein molecules, such as enzymes;

✔ The mitochondrion - is the cell's “Power Plant”

✔ The endoplasmic reticulum - is the transport network for active molecules;

✔ Ribosome –primary site of protein synthesis

✔ The Golgi complex/apparatus –    is the cell's central delivery system and a site for protein processing, packaging, and transport.

✔ Lysosome - contain enzymes that break down waste materials and cellular debris

✔ Centriole – two per cell; help with mitosis and meisosis when cell divides.

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