Question 20 (1 point) The technique that uses a pump to move water from a solution with a high concentration of solute to one with a low concentration of solute is called Question 21 (1 point) The surface area of a cell of dimensions 2.0 mm * 1.0 mm x 1.5 mm is 20 square millimeters 3.0 square millimeters 13 square millimeters 6.0 square millimeters Question 22 (1 point) What happens as a cell increases in size? More molecules need to be transported across the cell surface. The volume of the cell decreases. O The distance from the surface to the centre decreases. The surface area decreases. Question 23 (1 point) Use the information to answer the following question. Cells require a high surface area to volume ratio to increase the efficiency of diffusion. Some animal cells and some plant cells have features that help to increa the overall surface area to volume ratio of the cell or tissue. One structure in animal cells that increases the surface to volume ratio is the