Osmosis

Osmosis is the facilitated diffusion of which molecule?

• Water

• Salt

• Sugar

• Oxygen

Osmosis is a type of Passive Transport. Which direction do water molecules always travel in?

• Water will move from low to high concentrations.

• Water will move from high to low concentrations.

• Water will move in random directions.

• Water does not move.

Look at the water molecules on both sides of the membrane. Where will the water molecules travel to?

• The water molecules will travel into the cell.

• The water molecules will travel out of the cell.

• The water molecules cannot travel across the membrane.

• The water molecules are stationary (do not move at all).

Tags

NGSS.MS-LS1-2

Water has both positive and negative charges, which makes it hydrophilic. The phospholipid tails of the membrane are hydrophobic. Where can water cross the membrane?

• The water molecules can travel directly through the phospholipid bilayer with no issues.

• The water molecules need to travel through proteins called aquaporins.

Look at the water molecules on both sides of the membrane. Where will the water molecules travel to?

• The water molecules will travel into the cell.

• The water molecules will travel out of the cell.

• The water molecules cannot travel across the membrane.

• The water molecules are stationary (do not move at all).

Tags

NGSS.MS-LS1-2

A hypertonic solution is a solution that has:

• a low amount of solutes; high amount of water

• a high amount of solutes; low amount of water

• an equal amount of solutes and water

A hypotonic solution is a solution that has:

• a low amount of solutes; a high amount of water

• a high amount of solutes; a low amount of water

• an equal amount of solutes and water

An isotonic solution is a solution that has:

• a low amount of solutes; a high amount of water

• a high amount of solutes; a low amount of water

• an equal amount of solutes and water

A carrot is a living organism made of cells. When placed in a hypertonic solution, what will happen to the carrot's cells?

• The carrot cells will not change sizes.

• The carrot cells will expand.

• The carrot cells will shrink.

• The carrot cells will burst open.

Tags

NGSS.MS-LS1-5

Which of the following is an example of a hypotonic solution?

• Seawater

• Maple syrup

• Dr. Pepper

• Distilled water