Section 8.3 Cell Transport

What is the main difference between active transport and passive transport in a cell?

Osmosis is an example of active transport.

Molecules naturally move from an area of high concentration to low concentration unless something blocks them.

If the concentration of a molecule is the same on the inside of a cell as the outside of the cell, the molecule will stop diffusing (moving).

Water molecules can move freely in and out of a cell through small pores in the cell membrane.

What is the specific name given to the movement of water molecules from an area of higher water concentration to an area of lower water concentration?

What is the general name given to a substance that is dissolved in water?

What is the general name used to describe a solution that has the same solute concentration as the inside of a cell?

No water molecules diffuse in and out of a cell if it is placed in an isotonic solution.

What is the general name used to describe a solution that has LESS solute concentration than the inside of a cell?

What happens to the size of a cell if it is placed in a hypotonic solution?

In the Eggsperiment Lab, which solution was hypertonic compared to the inside of the egg?

Active transport often involves moving molecules from a lower concentration to a higher concentration.

What is the name used to describe how a cell moves particles OUT of the cell if they are too large to diffuse through the cell membrane?