Diffusion

Question 1

In order for the cell to stay alive, It must:

Answer 1

1. Cells need to get energy
2. Cells need to get nutrients
3. Cells need to remove waste products
4. Cells need to grow
5. Cells need to reproduce
6. Needs need to adapt themselves to their environment

Question 2

Factors affecting diffusion:

Answer 2

1. Extent of the concentration gradient
2. Mass of the molecules diffusing
3. Temperature
4. Solvent density

Question 3

The greater the difference in concentration, the more rapid the diffusion. The closer the distribution of the material gets to equilibrium, the slower the rate of
diffusion becomes.

Answer 3

Extent of the concentration gradient:

Question 4

The ———- the difference in concentration, the more ——— the diffusion. The —— the distribution of the material gets to equilibrium, the —— the rate of
diffusion becomes.

Answer 4

greater, rapid (faster)
closer, slower

Question 5

More massive molecules move more slowly, because it is more difficult for them to move between the molecules of the substance they are moving through; therefore, they diffuse more slowly.

Answer 5

Mass of the molecules diffusing:

Question 6

Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion

Answer 6

Temperature:

Question 7

As the density of the solvent increases, the rate of diffusion decreases. The molecules slow down because they have a more difficult time getting through the denser medium.

Answer 7

Solvent density:

Question 8

water goes in both directions

Answer 8

Isotonic

Question 9

water moves into the cell

Answer 9

Hypotonic

Question 10

water moves out of the cell

Answer 10

Hypertonic