| A | B |
| Diffusion | movement of particles from high concentration to low concentration |
| osmosis | diffusion of water through a semipermeable membrane |
| passive transport | movement of particles across a membrane without energy |
| active transport | movement of particles across a membrane using energy |
| endocytosis | cell membrane surrounds particle to bring into the cell |
| exocytosis | cell releases a particle through the cell membrane by vesicle |
| photosynthesis | plants use sunlight to make food |
| celluar respiration | cells use oxygen to produce energy from food |
| fermentation | breakdown of food without oxygen |
| cell cycle | life cycle of a cell |
| chromosome | structures that contain heredity information on DNA |
| homologus chromosomes | have the same sequence of genes and structure |
| mitosis | cell division that produces identical daughter cells |
| cytokinesis | division of the cytoplasm of a cell |
| aerobic respiration | combines food and oxygen with enzymes to make energy |
| anaerobic respiration | process that does not require oxygen producing lactic acid or alcohol |
| diploid number | species normal chromosome number |
| cancer | disease characterized by uncontrolled cell division |