| A | B |
|---|
| cell membrane | The membrane that surrounds the cytoplasm of a cell |
| selectively permeable | Allowing only certain molecules to pass through. |
| passive transport | Passage of substances across a membrane without the use of cellular energy. |
| diffusion | The movement of molecules from an area of higher concentationt an area of lower concentration |
| osmosis | Diffusion of water through a selectively permeable membrane. |
| active transport | The passage of particles through a membrane, requiring the use of cellular energy. |
| cell wall | A rigid structure manufactured by certain organisms and secreted to the exterior of the cell membrane. |
| organelle | organ like structures within the cell which perform certain functions. |
| mitochondria | Cellular organelles in which aerobic respiration occurs to release usable energy form food. |
| endoplasmic reticulum | A cellular organelle consisting of a network of membranes enabling substances to be transported throughout the cell. |
| ribosome | Cellular organelle that directs the assembling of proteins. |
| Golgi apparatus | A cellular organelle that collects chemicals from the cytoplasm, processing and secreting them. |
| vacuole | Membrane bound sac that contains various substances, including water and wastes, within a cell. |
| lysosome | An organelle that contains digestive enzymes. |
| chloroplast | A cellular organelle that contains chlorophyll and other pigments allowing for photosynthesis. |
| cilia | short hairlike extensions from a cell membrane, aid in movement. |
| flagella | Long hairlike extensions from a cell membrane that aid in movement |
| nucleus | Cellular organelle that contains the chromosomes controlling the cell. |
| chromosome | A strand of DNA with associated |
