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Stack #1026956
GR.7 Chap.2 Cells
| Question | Answer |
|---|---|
| one or more sugar molecules | carbohydrate |
| diffusion | movement from an area of high concentration to an area of lower concentration |
| lipid | large macromolecule that does not dissolve in water |
| macromolecule | substance that forms by joining many small molecules |
| protein | long chain of amino acid molecules |
| cell membrane | protects the inside of a cell from the environment |
| cell wall | stiff structure outside the cell membrane |
| chloroplast | membrane bound organelle that uses light energy and makes food |
| cytoplasm | fluid inside a cell that contains salts and other molecules |
| nucleus | directs all cell activities and contains DNA |
| organelle | membrane bound cell structure with a specialized function |
| active transport | movement of sustances through a cell membrane using the cell's energy |
| osmosis | diffusion of water molecules across a membrane |
| passive transport | movement of substances through a cell membrane without using energy |
| photosynthesis | series of reactions that convert light energy, water, and carbon dioxide into glucose and give off oxygen |
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harding48193
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