A cell is in equilibrium with its surroundings. The molarity of the surrounding

Question

A cell is in equilibrium with its surroundings. The molarity of the surrounding solution is 0.05M. To convert molarity to solute potential in MPa, use the formula: psi_s = - (i CRT) where i = ionization constant (assume that is 1) C = molar concentration (given above) R = pressure constant (R = 0.00831 liter MPa/mole degree K) T = temperature in degree K (room temp is about 293 degree K) Calculate the solute potential of the surrounding solution. Find the water potential of the surrounding solution. What is the water potential of the cytoplasm of the cell? True, false, or not enough information: The cell's molar concentration is equal to the molar concentration of the surrounding solution. Why?

Explanation / Answer

Question1

Answer

= -I CRT =-(1)(0.5)(0.00831)(293)= 1.217 mpa

Question2

Answer

Water potential = water potential surrounding = -1.22 mPa

Question3

Answer

Cell B at equilibrium

Hence

Water potential of cell = water potential surrounding = -1.22 mPa

Question4

Answer

NOT ENOUGH INFORMATION

IF THE CELL IS FLACCID THEN MAOLARITY IS EQUAL TO THE MOLARITY OUTSIDE.

IF THE CELL IS TURGID THEN MAOLARITY INSIDE IS GREATER THAT OUTSIDE.

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