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3.2 & 3.3 vocab term
Term | Definition |
---|---|
Selectively Permeable | a property of cell membranes that allows some substance to pass through,while others cannot |
Diffusion | the process by which molecules move from an area of higher concentration to an area of lower concentration |
Osmosis | the diffusion of water molecules through a selectively permeable membrane |
Passive Transport | the movement of dissolved materials through a cell membrane without using cellular energy |
Active Transport | the movement of materials through a cell membrane using cellular energy |
Photosynthesis | the process by which a cell captures energy in sunlight and uses it to make food |
Autotroph | an organism that makes its own food |
Heterothroph | an organism that cannot make its own food |
Pigment | colored chemical compounds that absorb light |
Chlorophyll | the main photosynthetic pigment in chloroplasts |
Stomata | the small openings on the undersides of a leaf |