3. Paramecia are unicellular organisms that have contractile vacuoles to remove (pump) excess intracellular water. In an experimental investigation, these paramecia were placed in salt solutions of increasing concentration. The rate at which the contractile vacuole contracted to pump out excess water was determined and plotted against osmolarity of the solutions (increased osmolarity higher salt concentration), as shown in the graph. What is the best explanation %3D for the data? Osmolarity of Solution (mM) Rate of Contraction (contractions per minute)

Biochemistry
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3. Paramecia are unicellular organisms that have contractile vacuoles to remove
(pump) excess intracellular water. In an experimental investigation, these
paramecia were placed in salt solutions of increasing concentration. The rate at
which the contractile vacuole contracted to pump out excess water was
determined and plotted against osmolarity of the solutions (increased osmolarity
= higher salt concentration), as shown in the graph. What is the best explanation
for the data?
Osmolarity of Solution (mM)
Your answer
Rate of Contraction
(contractions per minute)
Transcribed Image Text:3. Paramecia are unicellular organisms that have contractile vacuoles to remove (pump) excess intracellular water. In an experimental investigation, these paramecia were placed in salt solutions of increasing concentration. The rate at which the contractile vacuole contracted to pump out excess water was determined and plotted against osmolarity of the solutions (increased osmolarity = higher salt concentration), as shown in the graph. What is the best explanation for the data? Osmolarity of Solution (mM) Your answer Rate of Contraction (contractions per minute)
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