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Chapter 7 Vocab2a
Chapter 7 vocab part 2
| Question | Answer |
|---|---|
| Cell membrane | Thin, flexible barrier around a cell; regulated what enters and leaves the cell |
| Cell wall | Strong supporting layer around the cell membrane in plants, algae, and some bacteria |
| Lipid bilayer | Double-layered sheet that forms the core of nearly all cell membranes |
| Concentration | The mass of solute in a given volume of solution, or mass/volume |
| Diffusion | Process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated |
| Equilibrium | When the concentration of a solute is the same throughout a solution |
| Osmosis | Diffusion of water through a selectively permeable membrane |
| Isotonic | When the concentration of two solutions is the same |
| Hypertonic | When comparing two solutions, the solution with the greater concentration of solutes |
| Hypotonic | When comparing two solutions, the solution with the lesser concentration of solutes |
| Facilitated | Movement of specific molecules across cell membranes through protein channels |
| Active Transport | Energy-requiring process that moves material across a cell membrane against a concentration difference |
| Endocytosis | Process by which a cell takes material into the cell by infolding of the cell membrane |
| Phagocytosis | Process in which extensions of cytoplasm surround and engulf large particles and take them into the cell |
| Pinocytosis | Process by which a cell takes in liquid from the surrounding environment |
| Exocytosis | Process by which a cell releases large amounts of material |
| Cell Specialization | The process in which cells develop in different ways to preform different tasks |
| Tissue | Group of similar cells that preform a particular function |
| Organ | Group of tissues that work together to preform closely related functions |
| Organ systems | Group of organs that work together to preform a specific function |