Bio Chapter 3 Word Scramble
|
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
Term | Definition |
Cell Theory | The theory that states that all living things are made up of cells, that cells are the basic units of organisms, that each cell in a multicellular organism has a specific job, and that cells come only from existing cells. |
Cytoplasm | The region of the cell within the membrane that includes the fluid, the cytoskeleton, and all of the organelles except the nucleus |
Organelle | One of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function |
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 | The cytoplasmic network of protein filaments that plays an essential role in cell movement, shape, and division |
Nucleus | In a eukaryotic cell, a membrane-bound organelle that contains the cell's DNA and that has a role in processes such as growth, metabolism, and reproduction |
Endoplasmic Reticulum | A system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids |
Ribosome | A cell organelle composed of RNA and protein; the site of protein synthesis |
Golgi Apparatus | A cell organelle that helps make and package materials to be transported out of the cell |
Vesicle | A small cavity or sac that contains materials in a eukaryotic cell; forms when part of the cell membrane surrounds the materials to be taken into the cell or transported within the cell |
Mitochondrion | In eukaryotic cells, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration, which produces ATP |
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 protein, support, and shape to cells in plants, algae, fungi, and bacteria |
Chloroplast | An organelle found in plant and algae cells where photosynthesis occurs |
Cell Membrane | 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 | A lipid that contains phosphorous and that is a structural component in cell membranes |
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 |
Passive Transport | The movement of substances across a cell membrane without the use of energy by the cell |
Diffusion | The movement of particles from regions of higher density to regions of lower density |
Concentration Gradient | A difference in the concentration of a substance across a distance |
Osmosis | The diffusion of water or another solvent from a more dilute solution (of a solute) to a more concentrated solution (of the solute) through a membrane that is permeable to the solvent |
Isotonic | Solution that has an equal concentration of dissolved particles compared with another solution |
Hypertonic | Describes a solution whose solute concentration is higher than the solute concentration inside a cell |
Hypotonic | Describes a solution whose solute concentration is lower than the solute concentration inside a cell |
Facilitated Diffusion | The transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins |
Active Transport | The movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy |
Endocytosis | The process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell |
Phagocytosis | Uptake of a solid particle into a cell by engulfing the particle |
Exocytosis | The process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out |
Created by:
mariazierolf
Popular Biology sets