CB1 Cell Transport

Question 1

What is diffusion?

Answer 1

The net movement of particles from an area of high concentration to an area of low concentration (down the concentration gradient).

Question 2

What is osmosis?

Answer 2

The net movement of water from an area of high concentration to an area of low concentration (down the concentration gradient) across a partially permeable membrane.

Question 3

Describe the water and solute concentrations of a dilute solution.

Answer 3

High water concentration, low solute concentration

Question 4

Describe the water and solute concentrations of a concentrated solution.

Answer 4

Low water concentration, high solute concentration

Question 5

When water enters a plant cell by osmosis it becomes __________.

Answer 5

Turgid

Question 6

When water leaves a plant cell by osmosis it becomes __________.

Answer 6

Flaccid

Question 7

What will happen to the mass of a cell if is placed in a solution with a higher concentration of solute than the cell itself?

Answer 7

Mass will decrease (as water will leave the cell by osmosis).

Question 8

What will happen to the mass of a cell if it is placed in a solution with a lower concentration of solute than the cell itself?

Answer 8

Mass will increase (as water will enter the cell by osmosis).

Question 9

What will happen to the mass of a cell if is placed in a equally concentrated solution?

Answer 9

No change in mass (as there will be equal movement of water in and out of the cell by osmosis).