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Chapter 7 part 2
All of chapter 7 vocab
Question | Answer |
---|---|
Cell Membrane | Thin, flexible barrier around a cell; regulates 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 |
Facilitated Diffusion | Movement of specific molecules across cell membranes through protein channels |
Active Transport | Energy - required 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 perform different tasks |
Tissue | Group of similar cells that perform a particular function |
Organ | Group of tissues that work together to perform closely related functions |
Organ System | Group of organs that work together to perform a specific function |