Science 8

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9 Terms

1
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Diffusion

the movement of molecules from areas of greater concentration to areas of lesser concentration

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Osmosis

the diffusion of water across the cell membrane

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Active Transport

a process that allows molecules to move across the cell membrane from lower to higher concentrations

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Photosynthesis

a process where plants use the energy of sunlight to produce carbohydrates

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Color

how we perceive the energy of light

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Pigment

a molecule that absorbs some colors of light and reflects others

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Chlorophyll

the main pigment used in photosynthesis that absorbs blue and red light and reflects green light

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Cellular Respiration

the process in which the chemical bonds of energy-rich molecules are converted into a form of energy that cells can use

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ATP

a molecule that stores and transfers energy within cells