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Q1 - Diffusion.

Q2 - Osmosis.

Q3 - Active Transport.

Q4 - True.

Q5 - False. Water molecules will still be moving across, but there will not be any net movement.

Q6 - False. The rate of osmosis is affected by the difference in water potential, not the difference in concentration of one solute.

Q7 - False. The word 'net' is missing.

Q8 - False. Water potential is based on relativity. We can only compare two solutions and say that one is of lower or higher water potential than the other. We cannot use the term in an absolute sense to describe one single solution.

Q9 - True.

Q10 - True.

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The difference in the concentration of a substance between one location and another is called the concentration gradient.

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Diffusion is a form of passive transport which does not require any energy.

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You are given only one beaker of 20% sugar solution. The solution is said to be of low water potential.

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Osmosis is the movement of water molecules across a selectively permeable membrane.

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The rate of osmosis increases with increasing difference in solute concentration between two solutions separated by a partially permeable membrane.

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When two solutions separated by a partially permeable membrane reach osmotic equilibrium, water molecules will no longer move between the solutions.

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If a dead cell is placed in a solution with lower water potential than its cell contents, osmosis will not occur.

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When a cell is placed in a solution that has a lower water potential than its cell contents, water moves into the cell through ___________.

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Oxygen moves from an alveolus into a capillary within the lung. The process is _________.

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When a plant cell is placed in salt water, water moves out of the central vacuole of the cell. This process is ________.