| A | B |
|---|
| producer | organism that makes its own food |
| osmosis | the movement of water molecules through a selectively permeable membrane |
| active transport | movement of molecules that requires energy |
| enzyme | a protein that speeds up a chemical reaction |
| Biomass | organic material that is used for energy |
| Inorganic compound | made from elements other than carbon |
| equilibrium | when molecules have spread out evenly throughout a space |
| exocytosis | release of a substance in a sac at the cell membrane |
| fermentation | converting glucose into energy without the use of oxygen |
| gasohol | mixture of gasoline and ethanol |
| endocytosis | movement of large molecules into the cell |
| ion | an atom with charge |
| mixture | a combination of substances in which individual substances retain their own properties |
| atom | the smallest part of an element |
| molecule | the smallest part of a compound |
| element | a substance that is made of only one kind of atom |
| compound | made up of 2 or more elements and has properties different from the individual elements that make it up |
| solution | a mixture in which one or more substances are dissolved in another |
| suspension | a mixture in which the substances eventually settle over time |
| carbohydrates | break down to release enery for cell processes |
| lipid | store and release larger amounts of energy that even carbohydrates |
| protein | used to build cell parts |
| nucleic acids | store important information in cells. |
| organic compounds | compounds that contain carbon, that make up living things |
| diffusion | the net movement of molecules from an area where there are manyto an area where there are few. |
| Passive transport | a type of transport in which no energy is needed to move molecules across a cell membrane |
| metabolism | the total of all chemical activites of an organism that enable it to stay alive, grow and reproduce |
| Photosynthesis | the process by which the sun's energy is used to make a sugar from carbon dioxide and water |
| respiration | food molecules are broken down to release energy. Carbon dioxide and water are give off as waste products |
| consumers | organisms that can't make their own food |
| ionic bond | bond that forms when atoms transfer electrons |
| covalent bond | bond that forms when atoms share electrons |
| positive ion | when an atom looses an electron it becomes this |
| negative ion | when an atom gains an electron it becomes this |
| proton | positively charged particle in an atom |
| neutron | the neutral particle in an atom |
| electron | the negatively charged particle of an atom |
