Diffusion & Osmosis

What is diffusion?

• When molecules move from a low concentration to a high concentration

• When molecules move from a high concentration to a low concentration.

• When there is no movement of molecules

• When molecules move everywhere regardless of concentration

Osmosis is specifically.....

• diffusion of water molecules through a semi-permeable mebrane from an area of low concentration to an area of high concentration

• the diffusion of particles from an area of high concentration to an area of low concentration

• diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration

• the diffusion of particles from an area of low concentration to an area of high concentration

Tags

NGSS.MS-LS1-1

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.HS-LS1-3

Where is there a low concentration of perfume?

• in the bottle
• on the hand
• in the room
• in the top

Which gummy bear was left overnight in salt water?

• Larger bear

• Smaller bear

Tags

NGSS.MS-PS1-2

Which cell is in a hypertonic environment?

• A

• B

• C

• None of them are hypertonic

Tags

NGSS.HS-LS1-3

Which cell is in an isotonic environment?

• A

• B

• C

• None of them are isotonic

Tags

NGSS.MS-LS1-2

The cells seem to be shriveled and dehydrated what type of solution are they most likely in?

• Hypertonic
• Isotonic
• Hypotonic
• Inertonic

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-5

Movement of solute, NOT WATER, through the cell membrane from high to low concentration.

• diffusion

• active transport

• facilitated diffusion

• osmosis

If you are stranded at sea why is it safer to drink urine than sea water?

• One cup of sea water has enough sodium to poison you.
• Sea water is hypertonic to your cells and will only further dehydrate you.
• Sea water is too isotonic to your cells and you will absorb too much water.
• The salt will cause high blood pressure and you will die from a stroke.

Tags

NGSS.MS-PS1-2