Cells

What is diffusion?

• When molecules move

• no moving molecules

• when molecules move from a high concentration to a low

• molecules move everywhere in all directions

The picture below is an example of _________

• osmosis

• diffusion

• isotonic

• active transport

osmosis is the movement of _____ across a membrane

• food

• oxygen

• water

• energy

During osmosis

• water moves from high to low concentration

• water moves when energy is used

• large or oddly shaped molecules move across a cell membrane

• proteins are built

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

Which TWO examples show how salt molecules will diffuse?

• 
• 
• 
• 

The movement of water from high to low concentration is known as

Draw an arrow showing which direction the water molecules will move across the cell membrane.

The movement of particles from an area of high concentration to low concentration is known as____________

What is the difference between osmosis and diffusion?

• Osmosis involves movement of substances, diffusion involves movement of water.

• Osmosis involves movement of water, diffusion involves substances.

• Osmosis involves movement into a cell, diffusion involves movement out of a cell.

• Osmosis requires energy, diffusion does not.