science

howwould u define these words cell, organelle, cell theory, cell wall , cel membrain, nucleus, organ/system tissue.

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  1. well i know that a cell is a unit of function in living things.

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  2. cell wall it protects the plants because the animal cell has a skull so it doent need one.

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  3. Look up your words here:

    http://www.answers.com

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  4. what

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