For a science project, a student is asked to explain the osmotic function of the cell membrane using a working model. Which model should the student consider?
O a solid rubber ball placed in a beaker containing a concentrated salt solution
an egg in its shell placed in a beaker containing a concentrated sugar solution
O a solid, impermeable plastic ball containing a sugar solution placed in a beaker containing a more concentrated salt solution
O a semi-permeable plastic bag filled with a sugar solution placed in a beaker containing a more concentrated sugar solution