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OCHS Bio - Diffusion

OCHS Bio - Diffusion and Osmosis

QuestionAnswer
main component of the cell membrane phospholipids
molecule that gives strength to the cell membrane cholesterol
molecule on the outside of the cell membrane that aids in cell recognition carbohydrate chains
model that describes the arrangement of molecules in the cell membrane fluid mosaic model
allows some, but not all, materials to cross selective permeability (semipermeable)
a protein tht detects a signal molecule and performs an action in response receptor
movement of molecules across a cell membrane without energy input passive transport
movement of molecules in a fluid or gas from an area of high concentration to an area of low concentration diffusion
difference in the concentration of a substance from one location to another concentration gradient
movement of water from an area of high water concentration to an area of low water concentration osmosis
diffusion of molecules across a membrane through a transport protein facilitated diffusion
solution with the same concentration of solutes as the cell isotonic
solution with more solutes than the cell hypertonic
solution with less solutes than the cell hypotonic
movement of molecules from a region of low concentration to a region of high concentration using energy active transport
form of energy in the cell ATP
process of taking materials into a cell by engulfing them in a membrane endocytosis
endocytosis in which the cell membrane engulfs large particles - "cell eating" phagocytosis
endocytosis in which the cell membrane engulfs liquids - "cell drinking" pinocytosis
release of substances from the cell by the fusion of a vesicle from the membrane exocytosis
which direction water moves in a hypertonic solution out of the cell
which direction water moves in a hypotonic solution into the cell
which direction water moves in an isotonic solution no net movement
Created by: mrsjwelch
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