1) Which is the correct definition of osmosis? a) the passage of water from a region where it has a higher water potential to a region where it has lower water potential through a partially permeable membrane b) the passage of water from a region where it has a lower water potential to a region where it has higher water potential through a partially permeable membrane c) the passage of water from a region where it has a higher water potential to a region where it has lower water potential through a permeable membrane d) the passage of substances from a region where it has a higher water potential to a region where it has lower water potential through a partially permeable membrane 2) What is a solute? a) A liquid that dissolves a solid b) A solid that dissolves in a solvent c) A mixture of a liquid and a dissolved solid d) A solid that will not dissolve in a solution 3) What is a solution? a) A solid that will dissolve in a liquid b) A liquid that will dissolve a solid c) A mixture of a liquid and a dissolved solid d) A solid that will not dissolve in a liquid 4) What is a solvent a) A mixture of a liquid and a dissolved solid b) A solid that will not dissolve c) A solid that will dissolve d) A liquid that will dissolve certain solids 5) What is water potential? a) The concentration of water on a solution b) The pressure exerted by water molecules c) The concentration of a solution d) The amount of water needed to produce a saturated solution 6) Pure water has a water potential of ... a) 1000 kPa b) 100 kPa c) 0 kPa d) -100 kPa 7) A solution always has a water potential... a) Between 1 and 100 kPa b) Greater than 0 kPa c) Less than 0 kPa d) Between 0kPa and 1000kPa 8) True or false: Any molecule can move by osmosis a) True b) False 9) True or false: Adding a solute to water raises it's water potential a) True b) False 10) True or false: Osmosis requires metabolic energy a) True b) False 11) The partially permeable membrane is significant because... a) It allows the free movement of all molecules b) It only allows water molecules to move in one direction c) It only allows the movement of water molecules and not solutes d) It only allows water molevules to move into cells 12) If a cell is placed in a solution that has a lower water potential than the cell, water will move... a) Out of the cell b) Into the cell c) both in and out of the cell 13) If a cell is place in a solution with a higher water potential, water will move... a) Out of the cell b) In to the cell c) Both in to and out of the cell 14) A cell is placed into a solution. There is no net movement of water molecules into the cell. The solution is... a) Hypertonic b) Hypotonic c) Isotonic 15) In a plant cell, when water moves into the cell it is described as ... a) Turgid b) Plasmolysed c) Isotonic d) In dynamic equilibrium 16) In a plant cell, when water moves out of the cell it is described as ... a) Turgid b) Plasmolysed c) Isotonic d) Dynamic equilibrium 17) An animal cell has a water potential of -500kPa. In which solution is it least likely to burst? a) -200kPa b) Pure water c) -600kPa d) -900kPa 18) In which order would the following cells need to be placed so that water moved from one to the other? A =-200kPa B= -250kPa C=-100kPA D=-150kPa a) B,A,D,C b) CA,D,B c) C,D,A,B d) C,D,B,A

Osmosis quiz

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