Passive Transport

Passive Transport

By Gail Centeno

Multiple Choice

It is called "passive" transport because it does not require energy to move across the cell membrane.

• False

• True

Poll

A biologist has a 2.0L sample of seawater. She adds more water to the sample. This will make the solution more concentrated.

• Agree

• Disagree

Draw

Draw two containers where one is more concentrated than the other.

Open Ended

What is the main difference between "diffusion" and "osmosis"?

Molecules will move spontaneously from a high concentration to low concentration.

Problem: Cell Membrane is semi-permeable (only certain things can move through it).

Water can easily move in and out of a cell.

In Biology, we examine the movement of water molecules when examining passive transport.​

Water molecules will always move to make the concentrations reach equilibrium (same concentration_.​

​

Draw

Draw a "hypotonic" solution. Use dots to represent solute particles. Use an arrow to indicate the direction water molecules will move to establish equilibrium.

Draw

Draw a "hypertonic" solution. Use dots to represent solute particles. Use an arrow to indicate the direction water molecules will move to establish equilibrium.

Draw

Draw a "isotonic" solution. Use dots to represent solute particles. Use an arrow to indicate the direction water molecules will move to establish equilibrium.

Draw

What type of solution? Use an arrow to indicate direction of water molecules.

Draw

What type of solution? Use an arrow to indicate direction of water molecules.

Draw

What type of solution? Use an arrow to indicate direction of water molecules.

Draw

What type of solution? Use an arrow to indicate direction of water molecules.

Draw

What type of solution? Use an arrow to indicate direction of water molecules.

Draw

What type of solution? Use an arrow to indicate direction of water molecules.

Draw

For each figure, identify the type of solution.

Open Ended

Briefly describe passive transport.