martes, 9 de octubre de 2007

What is a cell?

Cells

-Definition of cell:a is the smallest part of any living thing.

-Parts of the cells:

Cell Membrane - forms the outer boundary of the cell and allows only certain materials to move into or out of the cell
Cytoplasm - a gel-like material inside the cell; it contains water and nutrients for the cell
Nucleus - directs the activity of a cell; it contains chromosomes with the DNA
Nuclear Membrane - separates the nucleus from the cytoplasm
Endoplasmic Reticulum - moves materials around in the cell
Ribosomes - make protein for the cell
Golgi Bodies - are used for packaging and secreting of energy
Mitochondria - break down food and release energy to the cell
Lysosomes - are chemicals used to digest waste
Vacuoles - are storage areas for the cell
Some organelles are found only in Plant cells. These organelles are
Cell Wall - provides structure to the plant cell
Chloroplasts - contain chlorophyll that is make food for the plant cell

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