movement of a solute (from high to low concentration)

movement of water from hypotonic solution (low solute) to hypertonic solution (high solute)

selective permeability

membrane allows some things through and others not (like bouncer)

there is continuous movement but no overall change

transport that does not require energy goes with the flow

requires energy (ATP) movement of a solute from low to high concentration (against concentration gradient) pumped through an intergal protein

facilitated diffusion

movement of a solute from high to low concentration (with concentration gradient) Through intergal protein channels or carriers in the membrane no energy required

found on inside our outside of the plasma membrane receptors that transmit signals inside the cell inner surface: give cell its shape

transport proteins; move needed substances or waste materials through plasma membrane (so they contribute to selective permeability)

helps to prevent fatty-acid tails from sticking together

chemical ID cards define cells characteristics and help cells identify chemical signals

the random motions of all atoms and molecules

the expulsion or secretion of materials from a cell (molecules are pushed into mouth as spit or saliva)

cell surrounds and takes in material from its environment (Ex. phagocytosis-eating solids and pinocytosis-drinking fluids)

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Biology

Cell Transport (7.2)

Question	Answer
diffusion	movement of a solute (from high to low concentration)
osmosis	movement of water from hypotonic solution (low solute) to hypertonic solution (high solute)
selective permeability	membrane allows some things through and others not (like bouncer)
concentration gradient	differences in concentration
dynamic equilibrium	there is continuous movement but no overall change
passive transport	transport that does not require energy goes with the flow
active transport	requires energy (ATP) movement of a solute from low to high concentration (against concentration gradient) pumped through an intergal protein
facilitated diffusion	movement of a solute from high to low concentration (with concentration gradient) Through intergal protein channels or carriers in the membrane no energy required
peripheral proteins	found on inside our outside of the plasma membrane receptors that transmit signals inside the cell inner surface: give cell its shape
intergal proteins	transport proteins; move needed substances or waste materials through plasma membrane (so they contribute to selective permeability)
cholesterol	helps to prevent fatty-acid tails from sticking together
carbohydrates	chemical ID cards define cells characteristics and help cells identify chemical signals
brownian motion	the random motions of all atoms and molecules
exocytosis	the expulsion or secretion of materials from a cell (molecules are pushed into mouth as spit or saliva)
endocytosis	cell surrounds and takes in material from its environment (Ex. phagocytosis-eating solids and pinocytosis-drinking fluids)

Created by: sabrina.kizy

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