Chapter 7 Biology Test

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Terms in this set (...)

What is the membrane made out of?
phospholipids
How does the membrane regulate movement of materials into and out of the cell?
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Osmosis
Diffusion of water through a selectively permeable membrane
Diffusion
Movement of molecules from an area of higher concentration to an area of lower concentration.
Facilitated diffusion
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
Exocytosis
Process by which a cell releases large amounts of material
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
Isotonic solution
A solution in which the concentration of solutes is essentially equal to that of the cell which resides in the solution
Hypertonic solution
A solution in which the concentration of solutes is greater than that of the cell that resides in the solution
Hypotonic solution
A solution in which the concentration of solutes is less than that of the cell that resides in the solution
Labs to know about
-Quantitative Plasmolysis
-Human Cheek cells
-Normal and Plasmolyzed Cells