Osmosis

Osmosis is the diffusion of _____ across a selectively permeable membrane.

• food
• air
• water
• oxygen

During diffusion

• substances (things) moves from high to low concentration
• water moves when energy is used
• large or oddly shaped molecules move across a cell membrane
• water moves from high to low concentration

 In the given scenario what will happen?  An egg with a dissolved shell is placed in pure water for 48 hours.

• Water will move in and out of the cell equally, and the cell with neither shrink nor swell.
• The egg will gain water and swell.
• The egg will lose water and shrink.

Tags

NGSS.HS-LS1-3

An animal cell placed in a concentrated salt solution will

• Stay the same

• Shrink- get smaller

• Swell- get bigger

The movement of water through a semi-permeable membrane is called?

• cell membrane
• respiration
• osmosis
• diffusion

The picture  is an example of _________________.

• isotonic

• diffusion

• osmosis

• active transport

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
• equilibrium
• diffusion
• hypertonic

In a solution, 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

If you looked at red blood cells under a microscope and saw the blood cells exploded, what would you say happened?

• The cells were placed in a dilute solution.

• the solution was isotonic.

• The cells were placed in a concentrated solution

Tags

NGSS.MS-PS1-2