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a "false foot" or temporary bulge of the cell membrane used for feeding and movement in some protozoans (p81)
the cell structure that collects extra water from the cytoplasm and then expels it from the cell (p82)
a close relationship between two organisms in which at least one of the organisms benefits (p84)
the buildup over time of nutrients in freshwater lakes and ponds that leads to an increase in the growth of algae (p92)
a form of asexual reproduction of yeast in which a new yeast cell grows out of the body of a parent (p98)
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