Duplicate of Osmosis: Don't Drink the Salt Water

A little review to start. The cell membrane's job is...

• to block all things from moving into the cell
• to control what enters & leaves the cell
• to help a cell stand upright
• to join one cell with another

By controlling the substances that move into & out of cells, the cell membrane maintains...

• marshal law
• anarchy
• homeostasis
• heterostasis

What are the two ways that substances can move through the cell membrane?

• active & passive transport
• slow & fast transport
• car & bus transport
• simple & difficult transport

And which of the following are typeS of passive transport?

• diffusion
• active transport
• osmosis
• facilitated transport

T/F: Passive transport requires ATP energy.

• True
• False

On to osmosis. Osmosis is the diffusion of water across a semi-permeable membrane.

• OK. When it's water, we give it a special name.

• Can we review?

Water can move through the cell membrane by diffusion or facilitated diffusion.

• OK. The proteins that facilitate osmosis are AQUAporins

• Can we review?

There are some terms we have to know. A substance dissolved in H₂O is known as a SOLUTE

• OK. Like salt in salt water would be the solute.

• You lost me.

The substance that disSOLVEs the solute is called the...

• Solvent, like the water in salt water
• Solute, like the salt in salt water

Review: Which color is the solute?

• blue
• orange
• green
• white