Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
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 7 Vocab
Vocab
| Term | Definition |
|---|---|
| Cell Theory | The theory that all organisms are composed of one or more cells |
| Cell Wall | Fairly rigid structure located outside the plasma membrane of plants, fungi, most bacteria, and some protists; provide support and protection |
| Chlorophyll | Light-absorbing pigment in plants and some protists that is require for photosynthesis; absorbs most wavelengths of light except for green |
| Chloroplast | Chlorophyll-containing organelles found in the cells plants and some protists; capture light energy and converted it to chemical energy |
| Cilia | Short, numerous, hairlike projections composed of pairs of microtubules; frequently aid in locomotion |
| Compound Light Microscope | Instrument that uses light and a series of lenses to magnify objects in steps; can magnify an object up to 1500 times its original size |
| Cytoplasm | Clear, gelatinous fluid cells that is the site of numerous chemical reactions; in eukaryotic cells, it suspends the cell's organelles |
| Cytoskeleton | Cellular framework found within the cytoplasm composed of microtubules and microfilaments |
| Electron Microscope | Instrument that uses a beam of electrons instead of light to magnify structures up to 500000 times actual size; allows scientists to veow structures within the cell |
| Endoplasmic Reticulum | Organelle in eukaryotic cells with a series of highly folded membranes surrounded in cytoplasm; site of cellular chemical reactions |
| Eukaryote | Unicellular or multicellular organisms, such as yeast, plants, and animals, composed of eukaryotic cells, which contain a true ucleus and membrane-bound organelles |
| Flagella | Long projections composed of microtubules; found o some cell surfaces; they help propel cells and organisms by a whiplike motion |
| Fluid Mosaic Model | Structural model of the plasma membrane where molecules are free to move sideways within a lipid bilayer |
| Golgi Apparatus | Organelle in eukaryotic cells with a system of flatened tubular membranes; sorts and packs proteins and sends them to their appropriate destinations |
| Lysosome | Organelles that contain digestive enzymes; digest excess or worn out organelles, food particles, and engulfed viruses or bacteria |
| Microfilament | Thin, solid protein fibers that provide structural support for eukaryotic cells |
| Microtubule | Thin, hollow cylinders made of protein that provide structural support for eukaryotic cells |
| Cell | Basic unit of all organisms; all living things things are composed of cells |
| Mitochondria | Eukaryotic membrane-bound organelles that transform energy stored in food molecules; has a highly folded inner memmbrane that produces energy-storing molecules |
| Nucleolus | Organelle in eukaryotic cell nucleus that produces ribosomes |
| Nucleus | Positively charged center of an atom composed of neutrons and positively charged protons, and surrounded by negatively charged electrons. |
| Organelle | Membrane-bound structures with particular functions within eukaryotic cells |
| Phospholipid | Reaction taking place in the thylakoid membranes of a chloroplast group; plasma membranes of a chloroplast during light-dependent reactions where two molecules of water are split to form oxygen, hydrogen ioms, and electrons |
| Plasma Membrane | Flexible boundary between the cell and its environment; allows materials such as water and nutrients to enter and waste products to leave |
| Plastid | Group of plant organelles that are used for storage of starches, lipids, or pigments |
| Prokaryote | Unicellular organisms, such as bacteria, each of which is composed of a prokaryotic cell. Prokaryotic cells lack internal membrane-bound structures |
| Ribosome | Nonmembrane-bond organelles in the nucleus where proteins are assembled |
| Selective Permeability | Feature of the plasma membrane that maintains hoeostasis within a cell by allowing some molecules into the cell while keeping otjers out |
| Transport Proteins | Proteins that span the plasma membrane creating a selectively permeable membrane that regulates which molecules enter and leave a cell |
| Vacuole | Membrane-bound space in the cytoplasm of cells used for the temporary storage of materials |
Created by:
samanthajenestarling
Popular Biology sets