| A | B |
|---|
| cytoplasm | material in and around other organelles in the cell |
| eukaryote | complex cells that contain membrane bound organelles |
| nucleus | control center of cell |
| organelle | structure of a cell with a funciton |
| plasma membrane | protects and controls what enters and leaves the cell: security guard |
| prokaryote | simple cells that do not contain a nucleus or membrane bound organelles |
| ribosome | organelle that produces proteins |
| virus | tiny particles that may cause disease |
| ATP | energy-carrying molecule used in cells |
| cell wall | exterior of plant cell made of cellulose |
| central vacuole | large storage area of plant cells |
| chloroplast | organelle in plants that contains chlorophyll for photosynthesis |
| cytoskeleton | organelles that provide structure and support for cell |
| endoplasmic reticulum | transport proteins and lipids: highway of cell |
| endosymbiotic theory | idea that eukaryote cells came from prokaryote cells engulfing other cells |
| Golgi apparatus | packages, labels and transports things: post office of cell |
| mitochondria | "power house" of the cell |
| phospholipid bilayer | phospholipids in the plasma membrane that are arranged in two layers |
| vacuole | storage compartments of the cell |
| vesicle | smaller sac-like organelles for storage |
| lysosome | breaks down things: janitor or clean up crew of cell |
| active transport | movement across cell membrane that does require energy |
| diffusion | movement across a membrane from high concentration to low concentration |
| endocytosis | use of vesicles to move things into the cell |
| exocytosis | use of vesicles to move things out of the cell |
| facilitated diffusion | diffusion with the help of transport proteins |
| osmosis | diffusion of water across a membrane |
| passive transport | movement across a membrane that does not require energy |
| sodium-potassium pump | active transport that moves sodium and potassium in and out of the cell |
| transport protein | special proteins that help things across the membrane |
| vesicle transport | movement of very large molecules across the membrane by active transport |
| hypertonic | solution high in solutes |
| hypotonic | solution low in solutes |
| isotonic | solution equal in solutes |
| buffer | a solution that resists a change in pH when acids or bases are added |
