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Science Stuff
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| Term | Definition |
|---|---|
| atom | basic unit of matter |
| element | something made up of a type of atom |
| compound | different elements bonded together |
| atomic number | number of protons in an atom |
| atomic mass | number of protons + number of neutrons |
| organic compound | contains carbon and hydrogen, mainly made of living things |
| inorganic compound | does not contain carbon and hydrogen, |
| carbohydrates | create cell processes, simple sugars |
| protein | used to build cell parts and help chemical reactions |
| lipids | store and release large amounts of energy used to make cell membrane |
| nucleic acid | store genetic info. for cell |
| diffusion | movement of molecules from high to low concentration |
| osmosis | diffusion of water from high to low concentration |
| selective permeability | allows certain things in, and certain things out |
| equillibrium | evenly spread out |
| passive transport | movement of materials w/o use of energy from high to low concentration |
| active transport | movement of materials from low to high concentration w/ energy use (ATP) |
| exocytosis | large molecules are packed in vesicles and removed from the cell by fusing |
| endocytosis | cell membrane surrounds large particles and bring them into the cell. proteins do this. |