Question

Describe how increasing salinity affects the amount of fluid ejected each time a contractile vacuole contracts. Calculate the water potential ( Ψ ) of an animal cell without contractile vacuoles if water enters the cell and creates a solute potential ( ΨS ) of −2 . Assume that the pressure potential ( ΨP ) in the cell is 0.

Answer 1

Answer:

Water potential $= -2$

Explanation:

As we know,

Water potential is equal to the sum of pressure potential and solute potential

Ψ $=$ ΨS $+$ ΨP

Where Ψ is the water potential

ΨS is the solute potential

ΨP is the pressure potential

Given -

Solute potential ( ΨS ) $= -2$

Pressure potential ( ΨP ) $= 0$

Substituting the given values, we get -

Ψ $=$ $- 2 + 0$

Ψ $=$ $- 2$