How will the water move? Osmosis Review Biology 11 Ms. Lowrie

Which is true about osmosis? a. Movement of water into or out of cell from high concentration to low concentration. b. Movement of water into or out of cell from low concentration to high concentration. c. Movement of salt into or out of cell from high concentration to low concentration.

#1 – How will the water move?  Vegetables in the grocery store are sprayed with water Water moves:  Into vegetable cells Vegetable cells grow in size Vegetable cells grow in size Keeps turgor pressure high & vegetable crispKeeps turgor pressure high & vegetable crisp  Hypotonic

#2 – How will the water move?  Salt is poured on a snail Water moves:  Out of snail cells into atmosphere Snail cells shrink & snail dies Snail cells shrink & snail dies  Hypertonic

#3 – How will the water move?  A cucumber slice is placed in salt water Water moves:  Out of cucumber cells into salt water Cucumber cells shrink & wilts (goes soggy) Cucumber cells shrink & wilts (goes soggy)  Hypertonic

#4 – How will the water move?  Potato slice is placed in pure water Water moves:  Into potato cells Potato cells grow in size Potato cells grow in size Keeps turgor pressure high & potato crispKeeps turgor pressure high & potato crisp  Hypotonic

#5 – How will the water move?  Red blood cell is placed in pure water Water moves:  Into blood cell Blood cell grows in size Blood cell grows in size Will eventually burst from the added pressureWill eventually burst from the added pressure Animal cell = no cell wallAnimal cell = no cell wall  Hypotonic

Healthy Cells  What type of solution do we want our cells to remain in? a. Hypertonic b. Hypotonic c. Isotonic  Why? Keep balance between water Keep balance between water moving in and out