A plant cell with a ΨS of -0.65 MPa maintains a constant volume when bathed in a solution that has a ΨS of -0.30 MPa and is in an open container. The cell has a

Question

Quizplus · Accepted Answer

The ΨP of the cell must be +0.35 MPa in order to balance the ΨS of the surrounding solution (-0.30 MPa) and maintain a constant volume. This can be calculated using the equation Ψ = ΨS + ΨP. Since the cell has a ΨS of -0.65 MPa, the ΨP must be +0.35 MPa to balance the surrounding solution and prevent water from entering or leaving the cell.

A Plant Cell with a ΨS of -0