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Chptr7Biology
Vocab chapter 7
| Term | Definition |
|---|---|
| Cell | The basic units of life |
| Compound Light Microscope | Uses a series of lenses to magnify objects in steps |
| Cell Theory | The theory that all organisms are composed of one or more cells, the cell is the basic unit of structure and organization of organisms, and all cells come from preexisting cells |
| Electron Microscope | Uses a beam of electrons instead of light to magnify structures up to 500,000 times their actual size |
| Organelles | Membrane-bound structures that with particular functions within eukaryotic cells |
| Prokaryotes | Cells that do not contain any membrane-bound organelles |
| Eukaryotes | Cells that do contain membrane-bound organelles |
| Nucleus | The central membrane-bound organelle that manages or controls cellular functions |
| Plasma Membrane | The flexible boundary between the cell and its environment |
| Selective Permeability | A process in which a membrane allows some molecules to pass through while keeping others out |
| Phospholipid | Lipids with an attached phosphate group |
| Fluid Mosaic Model | The model of the plasma membrane |
| Transport Proteins | Proteins that span the plasma membrane creating a selectively permeable membrane that regulates which molecules enter and leave a cell |
| Cell Wall | A fairly rigid structure located outside the plasma membrane that provides additional support and protection |
| Chromatin | Strands of genetic material, DNA. |
| Nucleolus | Organelle that makes ribosomes |
| Ribosomes | The sites where the cell produce proteins according to the directions of DNA |
| Cytoplasm | Clear, gelatinous fluid inside a cell |
| Endoplasmic Reticulum | The site of cellular chemical reactions |
| Golgi Apparatus | A flattened stack of tubular membranes that modifies proteins |
| Vacuoles | A sac used to store food, enzymes, & other materials needed by a cell |
| Lysosomes | Organelles that contain digestive enzymes |
| Chlorplasts | Cell organelles that capture light energy & convert it to chemical energy |
| Plastids | Group of plant organelles used for storage |
| Chlorophyll | Traps light energy and gives leaves and stems their green color |
| Mitochondria | membrane-bound organelles in plant and animal cells that transform energy for the cell |
| Cytoskeleton | Cellular framework found within the cytoplasm composed of microtubules and microfilaments |
| Microtubules | Thin, hollow cylinders made up of protein |
| Microfilaments | Smalled, solid protein fibers |
| Cilia | short, numerous projections that look like hairs |
| Flagella | Longer projections that move with a whiplike motion |
Created by:
jacoblucas97
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