Biology Review: Osmosis

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

Permeable means

• things can pass through
• the concentration levels are different
• it is permanent
• things are stuck

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 movement of water

When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of

• Osmosis
• Diffusion
• Equilibrium

In a solution of water and salt, salt is considered the _______.

• solvent
• solute
• solution

In a scenario, salt is placed into a bowl of water.  What is the solvent?

• salt
• water
• saltwater

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.

Tags

NGSS.MS-LS2-1

What does “high concentration area” mean?

• Spread out
• Tightly packed together
• Uncrowded
• Spacious

Tags

NGSS.HS-PS1-5

 If the size (volume) of a cell increases when it is placed in a solution, that solution is __________.

•  hypertonic
• subatomic
•  isotonic
•  hypotonic