Osmosis Practice

Which way will the water go? 15 43

43 50

70 30

40 80

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7. What happens to plant cells when they are put in really salty water? Water diffuses out of the cell and the central vacuole shrinks.

8. Explain what happens to animal cells when they are put in really salty water. Water diffuses out of the cell and the cell shrivels up.

9. What happens to plant cells that are put in fresh water. Water diffuses into the cell and fills up the central vacuole.

10. Explain what happens when animal cells are put in fresh water. Water diffuses into the cell, if too much water moves in the cell will burst.

11. Why don’t plant cells burst if a lot of water diffuses into them? Their cell wall keeps it from bursting.

12. Salt water crabs have the same proportion of salt in their cells as the water that they live in. Considering this, what would happen to the cells of a crab if you put it in fresh water. Why? It’s cells would burst because water would keep moving in.

13. What would happen to a fresh water fish if you put it in salt water, why?

If you put a freshwater fish in salt water, its cells would lose water and shrivel because the water has more salt than it’s cells.

14. What happens to your cells when you go to a movie and eat popcorn?

Your cells get thirsty. More water is inside the cells than in your bloodstream and the water goes from this high concentration to the low in the bloodstream, leaving your cells with less water and they get thirsty. You then go to the concessions for a drink. Ahhhhh, smart of the theatre!!!

15. What happens to your cells after you get your drink? Your cells have less water than your bloodstream so the water moves back into your cells.

Have you ever had this happen?

16. How is this patch helping sea sickness?

17. How are nicotine patches supposed to help smokers to stop smoking.