Lab 4: Movement of Materials

What is a hypertonic solution?

• The [solute] is the same within and outside of the cell.

• A solution of sugar.

• The solute concentration outside the cell is higher than that inside the cell.

• The solute concentration outside the cell is lower than that inside the cell.

What happens to an animal cell when placed in a hypotonic solution?

• Water rushes into the cell; lysis.

• Animal cells prefer to be under hypotonic conditions.

• Water rushes out of cell; shrivels.

What is selective permeability?

• All solutes can pass readily across a membrane.

• No solutes can pass across a membrane.

• Some solutes can pass across the membrane.

Select the option that lists all the different types of passive diffusion covered in lab.

• simple diffusion, facilitated diffusion, osmosis

• all types of diffusion that require energy

• osmosis is the only type

• diffusion that requires a carrier protein (facilitated)

Based on the scenario below, will diffusion occur faster or slower?

You have a dialysis tube containing 80% sucrose that is placed in water (solvent). You decrease the temperature of the water so that it is 10 degrees celsius.

• I don't know

• slower

• faster