1) What is diffusion? a) the movement of molecules from low concentrations to high concentrations b) The movement of molecules from high concentrations to low concentrations c) The movement of molecules from high concentrations to low concentrations until a balanced is reached d) The movement of molecules from high concentration to low concentration until its unbalanced  2) Which is an example of diffusion? a) Spray paint released from a can b) Perfume sprayed from the bottle c) Food coloring dispersing in a cup of water d) flowing water 3) What is osmosis? a) The movement of oxygen across the cell membrane b) The movement of water moving across the cell membrane c) The movement of glucose across the cell membrane d) The movement of waste moving across the cell membrane 4) True of False: ATP is needed when molecules move from high concentrations to low concentrations. a) True b) False 5) True or False: ATP is needed when molecules move from low concentrations to high concentrations. a) True b) False

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