Drs Yeshiva High School For Boys BIO 1 Multiple-Choice (2 pts each) 1. Paramecia are unicellular protists that have contractile vacuoles to remove excess intracellular water. In an experimental investigation, paramecia were placed in salt solutions of increasing osmolarity. The rate at which the contractile vacuole contracted to pump out excess water was determined and plotte ...[Show More]
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