decrease impermeable increase lower permeable higher Due to osmosis, water molecules (the blue circles), are traveling (in general) to a region of _____ water concentration. A ____________ concentration of solutes will attract water molecules. An increase in solute concentration would cause a(n) _______ in osmotic pressure. Plasma membranes are _________ to water. Solution Answers: Lower, Higher, Increase, Permeable Due to osmosis, water molecules (the blue circles), are traveling (in general) to a region of lower water concentration. A higher concentration of solutes will attract water molecules. An increase in solute concentration would cause a(n) increase in osmotic pressure. Plasma membranes are permeable to water..