Diffusion and Osmosis

Diffusion is the movement of particles from __1__ concentration to __2__ concentration until they are __3__ spread out.

• 1

• higher

• 3

• lower

• 2

• evenly

Match the following

• Amount of substance in a given space

• Concentration

• Diffusion of water molecules through a selectively permeable membrane

• Diffusion

• Allows some materials to pass through but keeps other materials out

• Selectively Permeable Membrane

• Movement of particles from an area of concentration to an area of lower concentratioin

• Osmosis

Pick all that apply: Passive Transport

• Osmosis

• Simple Diffusion

• Doesn't require Energy

• Molecules move from low concentration to high concentration

What is the process by which water diffuses across a selectively permeable membrane?

• active  transport

• osmosis

• simple diffusion

• facilitated diffusion

_______ regulates what enters and leaves a cell.  

• Cell Membrane
• Nucleus
• Mitochondria
• Cytoplasm

Tags

NGSS.MS-LS1-2

Why is diffusion so important in biology?

• It's the basic power source for most types of cells

• It allows substances to move across cell membranes

• It prevents toxins from entering our bodies

• Without diffusion, cell division could not take place

Tags

NGSS.MS-LS2-3

what happens to the rate of diffusion as the temperature increases?

• the rate of diffusion increases

• the rate of diffusion decreases

• the rate of diffusion stays the same

Tags

NGSS.MS-PS1-4

One molecule given off by plants during photosynthesis is

• Carbon dioxide
• Water
• Oxygen
• Mitochondria

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Equilibrium is when....

• there is a large amount of substance on the inside of the cell and a small amount in the outside solution

• there is a small amount of substance on the inside of the cell and a large amount in the outside solution

• there is an equal amount of substance on either side of the cell membrane

• there are no particles on either side of the the cell membrane

Tags

NGSS.MS-LS1-2

Which cell is in a hypertonic environment?

• A

• B

• C

• None of them are hypertonic