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cell homework-Lauren
vocab
| Question | Answer |
|---|---|
| the basic units of living organisms | cell |
| made up of three main ideas 1)all organisms are composed of one of more cells 2)the cell is the basic unit of structure and organization of organisms 3)all cells come from preexisting cells | cell theory |
| a series of lenses to magnify objects in steps | compound light microscope |
| uses a beam of electrons instead of light to magnify structures up to 500,000 times their size | electron microscope |
| most of the multicellular organisms aare made up of eukaryotic cells; unicellular organisms | eukaryote |
| the central membrane bound organelle that manages or controls cellular funtions | nucleus |
| all cells contain small, specialized strctures | organelles |
| do not have membrane bound organelles | prokaryotes |
| the flexible boundary between the cell and its environment | plasma membrane |
| a process in which a membrane allows some molecules | selective permeability |
| move needed substances or waste materials through the plasma membrane | transport proteins |
| a fairly rigid structure located outside the plasma membrane the provides additional support and protection | cell wall |
| traps the light energy and gives leaves and stems their green color | chlorophyll |
| are cell organelles that capture light energy and convert to chemical energy | chloroplast |
| strands of the genetic material | chromatin |
| short, numerous projections that look like hairs | cilia |
| is the clear, gelatinous fluid inside the cell | cytoplasm |
| the support structure of the cell | cytoskeleton |
| the site of the cellular chemical reactions | endoplasmic reticulum |
| longer projections that move with a whip-like motion | flagella |
| a flattened stack of tubular membranes that modifies the proteins | Golgi apparatus |
| organelles that contain digestive enzymes | lysosome |
| smaller, solid protein fibers | microliament |
| thin, hollow cylinders made of protein | microtubule |
| membrane bound organelles in plant and animal cells that transform energy for the cell | mitochondria |
| a permanent organelle within the nucleous which makes ribosomes | nucleolus |
| used for storage in a cell | plastid |
| the sires where the cell produces proteins according to the directions of DNA | ribosome |
| membrane compartments of a cell use to store food, enzymes and other materials needed by a cell | vacuole |
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