| A | B |
|---|
| ions | electrically charged atoms |
| osmosis | the movement of water molecules |
| biomass | organic material that is used for energy |
| chemical formula | a group of symbols to indicate porportion |
| organic compounds | class of compounds in living organisms |
| producer | organism that makes its own food |
| enzyme | protein that speeds up a chemical reaction |
| equilibrium | when molecules are spread evenly throughout a space |
| passive transport | material moving through cell membrane without help of energy |
| biogas | a mixture of gases that can be stored and transported like natural gas |
| element | something that is made up of only one kind of atom |
| diffusion | a movement of molecules from an area where there are many to where there are few |
| consumers | organisms that can't make their own food |
| active transport | movement of molecules that requires energy |
| semipermeable membrane | a membrane that allows some materials to pass through while keeping others out |
| fermentation | the converting of glucose to another energy form without exygen |
| permeable membrane | a membrane that has pores or openings that allow liquids or gases to pass through |
| mixture | a combination of substances in which individual substances retain their own properties |
| metabolism | all activities that enable an organism to live, grow, and reproduce |
| endocytosis | pinched off sac that enters into the cytoplasm |
| inorganic compound | made from elements other than carbon |
| gasohol | mixture of gasoline and ethanol |
| exocytosis | release of a substance from a small sac at the membrane |
