Question

UESTION 1 What would enhance water uptake by a plant cell? O decreasing the Ψ of the surrounding solution O increasing the pressure exerted by the cell wall ( the loss of solutes from the cell o increasing the Ψ of the cytoplasm O positive pressure on the surrounding solution QUESTION 2 The value for Ψ in root tissue was found to be- O be from the tissue into the sucrose solution O be from the sucrose solution into the tissue 15 MPa If you take the root tissue and place it in a 0.1 M solution of sucrose (Ψ be in both directions and the concentration of water would remain equal Ooccur only as ATP was hydrolyzed in the tissue QUESTION 3 If isolated plant cells with a water potential averaging -0 5 MPa are placed into a solution with a water potential of -03 MPa which of the following would be the most lakely ou dia di 다 @.e-0寸 0

Answer 1

QUESTION 1 What would enhance water uptake by a plant cell? decreasing the Psi of the surrounding solution increasing the pressure exerted by the cell wall the loss of solutes from the cell increasing the Psi of the cytoplasm positive pressure on the surrounding solution The osmotic potential of pure water is zero. But the osmotic potential within the cell is positive, which drives the water uptake by the plant cell (by osmosis).