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3.2 & 3.3 Vocabulary
Term | Definition |
---|---|
Selectively Permeable | some substances can pass through while other cannot |
Diffusion | process by which molecules move from an area of higher concentration to an area of lower concentration |
Osmosis | diffusion of water molecules through a selectively permeable membrane |
Passive Transport | movement of dissolved materials through a cell membrane without using cellular energy |
Active Transport | movement of materials through a cell membrane using cellular energy |
Photosynthesis | process by which a cell captures energy in sunlight and uses it to make food |
Autotroph | an organism that can makes its own food |
Heterotroph | an organism that cannot make its own food |
Pigment | colored chemical compound that absorbs light |
Chlorophyll | the main photosynthetic pigment in chloroplasts |
Stomata | small openings on the underside of the leaf |