Cell Membrane
Hypertonic
Having more solute molecules than cytoplasm of a cell
Hydrophobic
Water-fearing
Turgor pressure
Outward pressure on cells
Concentration gradient
A difference in amount of molecules between two areas
Selectively permeable
Allows certain molecules to pass through; keeps some molecules out
Solvent
Fluid that dissolves a solid, liquid, or gas
Isotonic
Equal amounts of solute molecules
Hypotonic
Having less solute molecules than cytoplasm of a cell
Diffusion
High to low movement of monomers; used transport protein; no energy required
Facilitated diffusion
High to low movement of small, fat-soluble, uncharged polar molecules; through phospholipid bilayer; no energy required
Osmosis
High to low movement of water; through phospholipid bilayer; no energy required
Solution
Mixture of a substance that is dissolved in another
Passive transport
Movement of molecules from high to low; no energy required
Active transport
Movement of molecules from low to high; uses transport protein; requires energy
Cholesterol
Structure that allows cells to communicate with each other to work as a unit
Phospholipid bilayer
Structure that consists of 2 layers of lipids
Transport protein
Structure that helps move molecules across the cell membrane
Carb chain
Structure that identifies the cell
Solute
Substance that is dissolved
Concentration
The amount of molecules in a specified area
Endocytosis
Use of vesicles to move polymers into the cell
Exocytosis
Use of vesicles to move polymers out of the cell
Hydrophilic
Water-loving