Question 4: conceptual analysisAbout 10 minutes · 4 points
Paramecium is a single-celled organism with no cell wall that lives in fresh pond water. Its cytoplasm has a much higher solute concentration than the pond water. A contractile vacuole collects excess water from the cytoplasm and expels it from the cell, a process that uses ATP. A researcher adds a drug that stops ATP production to a culture of Paramecium. The drug does not damage the plasma membrane.