membrane + transport Word Scramble
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Question | Answer |
active transport | movement of materials across a membrane that requires an input of energy from a cell |
cell membrane | Also known as the plasma membrane and composed of a bilayer of phospholipids |
concentration gradient | the region over which there is a change in concentration of a substance |
endocytosis | the movement of materials into a cell by use of a vesicle |
exocytosis | the movement of materials out of a cell by use of a vesicle |
hydrophilic | water loving; soluble in water |
hydrophobic | water hating; not soluble in water |
osmosis | the diffusion of water across a semipermeable membrane |
passive transport | movement of materials across a membrane that does not require energy from the cell |
phospholipid bilayer | the double layer of phospholipids that makes up the membranes of a cell |
diffusion | process in which atoms and molecules move from an area where they are more concentrated to an area where they are less concentrated |
semipermeable | permeable to some molecules, but not to others |
phospholipids | the type of molecule that makes up the bulk of the cell membrane |
cholesterol | helps hold the phospholipids together in the membrane |
fluid mosaic model | a description of the cell membrane |
protein channels | Help molecules get into and out of the cells |
Created by:
Mrs. betzenberger
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