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| the "power houses" of the cell, they produce most of the enrgy of the cell using respiration |
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| these carry proteins and other materials from one part of a cell to the other |
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| these package up materials and distribute them to other parts of the cell |
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| these parts are usually in plant cells, they capture sunlight and make food for the plant using photosynthesis |
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| the break down old cell particles into smaller ones |
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| the process by which molecules tend to move from areas of higher concentration to an area of lower concentration |
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| some substances can pass through, while others cannot |
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| the movement of materials through a cell membrane without using energy |
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| the movement of materials through a cell membrane using energy |
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| the diffusion of water, transporting water from and into the cell |
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