| A | B |
|---|
| inorganic compound | class of compounds made from elements other than carbon—for example, water |
| organic compounds | class of compounds in living organisms: carbohydrates, lipids, proteins and nucleic acids |
| diffusion | the movement of molecules from areas of high concentration to areas of lower concentration |
| equilibrium | condition in which molecules of a substance are spread evenly throughout a space |
| osmosis | the diffusion of water through a cell membrane |
| passive transport | movement of materials across a cell membrane without the use of energy |
| active transport | movement of material through a cell membrane with the use of energy |
| endocytosis | a process by which cells transport a large body, such as a large protein molecule, through a cell membrane into the cytoplasm |
| exocytosis | a process by which a cell moves large molecules out through the cell membrane |
| metabolism | all of the chemical activities of an organism that enable it to live, grow and reproduce |
| producer | an organism, such as green plants, that makes its own food by photosynthesis |
| consumer | organisms that can’t make their own food |
