Osmosis Review

During osmosis

• water moves from high to low concentration
• large or oddly shaped molecules move across a cell membrane
• water moves when energy is used
• proteins are built

If there is 5 percent water inside a cell and 5 percent water outside a cell

• more water will move inside the cell

• more water will move outside the cell

• There will be no net movement of water

HYPO means...

• Low
• High
• Equal
• Fat

A student noticed that placing wilted lettuce in a bowl of cool water caused the lettuce to become more crisp and firm. What is the best explanation for his observation?

• Water moved into the lettuce cells by active transport.
• Water moved into the lettuce cells by osmosis.
• Salt moved into the lettuce cells by diffusion.
• Water moved out of the lettuce cells by osmosis.

If a cell containing 5% salt is placed into a glass of water with 20% salt, the solution is _______ compared to the cell.

• hypertonic

• hypotonic

• isotonic

The cell below is in a _________ solution.

• Hypotonic
• Hypertonic
• Isotonic

The cell below is in a _____________ solution.

• Hypertonic
• Hypotonic
• Isotonic

If a cell is placed in a HYPOTONIC solution, water will move _________ of the cell, causing it to ___________.

• into, swell
• out of, shrivel
• in and out of the cell, stay the same

The solution with LESS (LOWER) solute

• hypertonic

• hypotonic

• isotonic

When 2 solutions have the same solute concentration they are

• hypertonic

• hypotonic

• isotonic