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Ch 3 Test
BIOLOGY
| Question | Answer |
|---|---|
| endocytosis | substances engulf cells, process of taking things into the cel |
| exocytosis | cell getting rid of substances |
| phagocytosis | cell eating (solids) |
| hypertonic | high concentration of solute |
| hypotonic | low concentration of solute |
| isotonic | equal concentration of solute and both sides |
| lysosome | releases enzymes |
| chloroplast | where photosynthesis takes place and gives it green color |
| cytoplasm | holds insides of cell (organelles) |
| cytoskeleton | gives cells structures |
| active transport | moving molecules using energy |
| passive transport | movement of substances without energy |
| osmosis | diffusion of water |
| diffusion | substances moving from a high concentration to a low concentration |
| organelles | carries out special jobs in a cell |
| cell theory | 3 main points, last is that all cells come from existing cells |
| phospholipid | make up the 2 layers of the cell membrane |
| fluid mosaic model | describes cell membrane structure because it is flexible and could be compared to an arrangement of tiles |
| eukaryotic cell | has a nucleus and are plants and animal cells |
| prokaryotic cell | does not have a nucleus and is bacteris |
| facilitated diffusion | help molecules diffuse across a membrane through transport proteins |
| endoplasmic reticulum | 2 types, rough and smooth, and helps produce proteins and lipids |
| lysosome | contains enzymes and defends cells from viruses and bacteria, animal cells have lots of them |
| mitochondrion | organelle shaped like a bean and provides energy for the cell |
| centriole | cylinder-shaped organelle in animal cells, and helps make flagella |
| cell membrane | outer edge that separates a cell from the outside environment and controls what goes in and out of the cell |
| receptor | receives signals from molecules and makes sure the right cell gets the right signal at the right time |
| vacuole | sac filled with fluid inside a cell that stores materials and the cell needs |
| vesicles | little organelle that carries materials from one part of the cell to another, does not live long, but can be recycled |
| cell theory | theory that states that all organisms are made of cells, al cells are produced by other living cells, and the cell is the most basic unit of life |
| nucleus | organelle composed of a double membrane that acts as the storehouse for most of a cell's DNA |
| organelle that links amino acids together to form proteins | |
| golgi apparatus | stack of flat, membrane-enclose spaces containing enzymes that process, sort, and deliver proteins |
| cell wall | rigid structure that gives protection, support, and shape to cells in plants, algae, fungi, and bacteria |
| concentration gradient | difference in the concentration of a substance from one location to another |
| selective permeability | condition or quality of allowing some, but not all, materials to cross a barrier or membrane |