1st Bio Quiz Flashcards
Isotonic
Solution that Has an equal concentration of dissolved particles compared with another solution.
Osmosis
Diffusion of water molecules across a semipermeable membrane from an area of lower water concentration
Hypertonic
Solution that has a higher concentration of dissolved particles compared with another solution.
Cell membrane
Double layer of phospholipids that forms a boundary between a cell and the surrounding environment and controls the passage of materials in and out of the cell.
Phospholipids
Molecule that forms a double layer cell membrane consists of glycerol, and 2 fatty acids
Fluid mosaic model
Model that describes the arrangement and movement of the molecules that make up a cell membrane
Selective permeability
Condition or quality of having some, but not all, materials cross a barrier or membrane
Receptor
Protein that detects a signal molecule and performs an action in response