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| the movement of molecules from an area of higher concentration to an area of lower concentration |
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| openings on the underside of leaves where carbon dioxide enters |
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| the movement of materials through a cell membrane using cellular energy. |
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| the process by which a cell makes a copy of the DNA in its nucleus |
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| a green pigment found in the chloroplasts, algae, and some bacteria |
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| process by which cells break down molecules to release energy without using oxygen |
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Definition
| A colored chemical that absorbs light. |
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Definition
| is the stage during which the cells nucleus divides into new nuclei |
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| The diffusion of water molecules through a selectively permeable membrane. |
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| the process by which cells obtain energy from gluclose. |
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Definition
| the first stage of the cell cycle |
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Definition
| The movement of dissolved materials through a cell membrane without using cellular energy |
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Definition
| when the two new nuclei divide |
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Definition
| some substances can pass through while others cannot |
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Definition
| cells undergo the process of growing and dividing in this process |
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