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Chapter 5

Section 1

QuestionAnswer
the movement of substances arosss a cell membrane without the use of energy by the cell passive transport
the movemment of particles from regions of higher density to regions of lower density diffusion
a difference in the concentration of a substance across a distance concentration gradient
in biology, a state that exists when the concentration of a substance is the same throughout a space equilibrium
the diffusion of water or another solvent from a more dilute solution (of a solute) to a more concentrated solution (of the solute) through a membrane that is permeable to the solvent osmosis
describes a solution whose solute concentration is lower than the solute concentration inside a cell hypotonic
describes a solution whose solute concentration is higher than the solute concentration inside a cell hypertonic
describes a solution whose solute concentration is equal to the solute concentration inside a cell isotonic
in protists, an organelle that accumulates water and then releases it periodically to maintain osmotic pressure contractile vacuole
the pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell turgor pressure
the contraction or shrinking of the cell membrane of a plant cell in a hypertonic solution in response to the loss of water by osmosis plasmolysis
the bursting of a cell cytolysis
the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins facilitated diffusion
a protein that transports substances across a cell membrane carrier protein
a complex of protein molecules in a cell membrane that form a pore through which ions can pass ion channel
Created by: fasolak16
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