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chap 3 vocab
| Term | Definition |
|---|---|
| cell theory 3.1 | theory that states that all organisms are made of cells, all cells are produced by other living cells, and the cell is the most basic unit of life. |
| cytoplasm 3.1 | jellylike substance inside cells that contains molecules and in some cells organelles. |
| organelle 3.1 | membrane-bound structure that is specialized to perform a distinct process within a cell. |
| prokaryotic cell 3.1 | cell that does not have a nucleus or other membrane-bound organelles. |
| eukaryotic cell 3.1 | cell that has a nucleus and other membrane-bound organelles. |
| cytoskeleton 3.2 | network of proteins, such as microtubules and microfilaments, inside a eukaryotic cell that supports and shapes the cell. |
| nucleus 3.2 | organelle composed of a double membrane that acts as the storehouse for most of a cell’s DNA. |
| endoplasmic reticulum 3.2 | interconnected network of thin, folded membranes that produce, process, and distribute proteins. |
| ribosome 3.2 | organelle that links amino acids together to form proteins. |
| Golgi apparatus 3.2 | stack of flat, membrane-enclosed spaces containing enzymes that process, sort, and deliver proteins. |
| vesicle 3.2 | small organelle that contains and transports materials within the cytoplasm. |
| mitochondrion 3.2 | bean-shaped organelle that supplies energy to the cell and has its own ribosomes and DNA. |
| vacuole 3.2 | organelle that is used to store materials, such as water, food, or enzymes, that are needed by the cell. |
| lysosome 3.2 | organelle that contains enzymes. |
| centriole 3.2 | small cylinder-shaped organelle made of protein tubes arranged in a circle; aids mitosis. |
| cell wall 3.2 | rigid structure that gives protection, support, and shape to cells in plants, algae, fungi, and bacteria. |
| chloroplast 3.2 | organelle composed of numerous membranes that are used to convert solar energy into chemical energy; contains chlorophyll. |
| cell membrane 3.3 | double-layer of phospholipids that forms a boundary between a cell and the surrounding environment and controls the passage of materials into and out of a cell. |
| phospholipid 3.3 | molecule that forms a double-layered cell membrane; consists of a glycerol, a phosphate group, and two fatty acids. |
| fluid mosaic model 3.3 | model that describes the arrangement and movement of the molecules that make up a cell membrane. |
| selective permeability 3.3 | condition or quality of allowing some, but not all, materials to cross a barrier or membrane. |
| receptor 3.3 | protein that detects a signal molecule and performs an action in response. |
Created by:
rcolangelo25
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