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| I wonder what I'm made out of? | |
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| I know. I just took an AP Biology class at Harvard. | |
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| I know we are made of cells, but what are the cells made of? | |
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| Cells are made of organelles, Bob! | |
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| What's an organelle and how do they work? | |
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| Organelles are the building blocks of cells; there are many different types. | |
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