Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chapter 3 vocab
| Term | Definition |
|---|---|
| cell theory | 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 | jellylike substance inside cells that contains molecules and in some cells organelles |
| organelle | membrane-bound structure that is specialized to perform a distinct process within a cell |
| prokaryotic cell | cell that does not have a nucleus or other membrane-bound organelles |
| eukaryotic cell | cell that has a nucleus and other membrane-bound organelles |
| cytoskeleton | network of proteins, such as microtubules and microfilaments, inside a eukaryotic cell that supports and shapes the cell |
| nucleus | organelle composed of a double membrane that acts as the storehouse for most of a cell's DNA |
| endoplasmic reticulum | interconnected network of thin, folded membranes that produce, process, and distribute proteins |
| ribosome | organelle that links amino acids together to form proteins |
| Golgi apparatus | stack of flat, membrane-enclosed spaces containing enzymes that process, sort, and deliver proteins |
| vesicle | small organelle that contains and transports materials within the cytoplasm |
| mitochondrion | bean-shaped organelle that supplies energy to the cell and has its own ribosomes and DNA |
| vacuole | organelle that is used to store materials, such as water, food, or enzymes, that are needed by the cell |
| lysosome | organelle that contains enzymes |
| centriole | small cylinder-shaped organelle made of protein tubes arranged in a circle; aids mitosis |
| cell wall | rigid structure that gives protection, support, and shape to cells in plants, algae, fungi, and bacteria |
| chloroplast | organelle composed of numerous membranes that are used to convert solar energy into chemical energy; contains chlorophyll |
| cell membrane | double-layer of phospholipids that forms a boundary between a cell and the surround environment and controls the passage of materials into and out of a cell |
| phospholipid | molecule that forms a double-layered cell membrane; consists of a glycerol, a phosphate group, and two fatty acids |
| fluid mosaic model | model that describes the arrangement and movement of the molecules that make up a cell membrane |
| selective permeability | condition or quality of allowing some, but not all, materials to cross a barrier or membrane |
| receptor | protein that detects a signal molecule and performs an action in response |
Created by:
rmve123