40.Complete the table that compares terms associated with tonicity. Isotonic solutionHypotonic solutionHypertonic solutionEach term refers to . . . Effect on a plant cell if placed in a(n) . . .Effect on an animal cell if placed in a(n) . . .41.Which of the following statements regarding transport across a plasma membrane is false? a.Passive transport requires an input of energy from the cell. b.Osmosis is the diffusion of water across a selectively permeable membrane. c.Substances always travel down their concentration gradient in passive transport. d.Facilitated diffusion requires a specific transport protein found in the membrane.
42.True or false: Aquaporins form the specific protein channel through which water diffuses. If false, make it a correct statement. 43.In contrast to passive transport, active transport pumps a substance ____________ its gradient. 44.Use the Venn diagram to compare exocytosis with endocytosis.