| A | B |
|---|
| active transport | energy-requiring process in which transport protein bind with particles and move them through a cell membrane |
| diffusion | a type of passive transport in cells in which molecules move from areas where there are more of them to areas where there are fewer of them |
| endocytosis | process by which a cell takes in a substance by surrounding it with the cell membrane |
| enzyme | a type of protein that regulates nearly all chemical reactions in cells |
| equilibrium | occurs when molecules of one substance are spread evenly throughout another substance |
| exocytosis | process by which vesicles release their contents outside the cell |
| fermentation | process by which oxygen-lacking cells and some one-celled organisms release small amounts of evergy from glucose molecules and produce waste such as alcohol, carbon dioxide, and lactic acid |
| inorganic compound | compound such as H2O, that is made from elements other than carbon and whose atoms usually can be arranged only in one structure |
| metabolism | the total of all chemical reactions in an organism |
| mixture | a combination of substance in which the individual substance do not change or combine chemically but instead retain their own individual properties |
| organic compound | compounds that always contain hydogen and carbon |
| osmosis | a type of passive transport that occurs when water diffuses through a cell membrane |
| passive transport | movement of substances through a cell membrane without the use of cellular energy |
| photosynthesis | food-making process by which plants and many other producers use light energy to produce glucose and oxygen from carbon dioxid and water |
| respiration | series of chemical reactions used to release energy stored in food molecules |
