Egg Lab & Diabetes

By: Heidi Hisrich

Draw a picture like the one below

Analyze the picture

• Look at your vocabulary and figure out which part of the picture (that you just drew) is the solution, which is the solvent and which is the solute. Label each.

• Explain (in your own words) what each term means

Osmosis!

• Watch the animation at: http://highered.mheducation.com/sites/0072495855/student_view0/chapter2/animation__how_osmosis_works.html

• Watch it again, pausing regularly. In your journal, explain what osmosis is, highlighting the following terms: diffusion, water, plasma membrane, permeable and molecules

• Take the quiz underneath the animation to check your understanding. If you don’t get them correct, re-watch the animation and try again.

Egg Lab Analysis

• Draw a picture like the one below, showing the egg in water and the egg in syrup

Checkpoint—what do we call the outermost part of the egg, now that the shell has been

removed?

• A semi-permeable membrane

Checkpoint—what’s the only thing that can pass THROUGH the membrane?

• Water!

Egg in water

• Draw a few dots in the “egg” in the water• These represent solutes (sugars, salts) in the

egg

Egg in water (cont)

• Do not draw ANY dots in the water portion. Assume the water was pure. There is no solute.

Egg in water (cont)

• There’s a phrase that is AWESOME to help remember osmosis. Write it down. That phrase is:

•SUGAR SUCKS!

Egg in water (cont)

• Another phrase that is true (write it down too) is:

•SALT SUCKS!

Egg in water (cont)

• Show in your diagram what happened (as I did below) and explain why– Did the egg LOSE or GAIN mass when it was in

water? Explain.

Egg in water (cont)

• Basically, in osmosis, the solution that has MORE sugar or salt will SUCK WATER from the other one in order to even things out. So which way will the water move if the egg is in water?

Now do you understand why the egg in water got so swollen?

Egg in syrup

• Draw a few dots in the “egg” in the water• Draw LOTS of dots in the syrup to represent all

the sugars in it!

Egg in syrup (cont)

• What was that awesome phrase again?

•SUGAR SUCKS!

Egg in syrup (cont)

• Show in your diagram what happened (as I did below) and explain why– Did the egg LOSE or GAIN mass when it was in

syrup? Explain.

Egg in syrup (cont)

• Remember, in osmosis, the solution that has MORE sugar or salt will SUCK WATER from the other one in order to even things out. So which way will the water move if the egg is in sugar?

Now do you understand why the egg in syrup shriveled up and looked sad?

Apply it!

• Write a short explanation (using the results of the egg lab, what you’ve learned about osmosis and what you know about a diabetic’s blood) to explain why diabetics are so thirsty! I pretty much guarantee this will be an essay question on your Unit 2 test!!

Now make a shutterfold as below

• Look up the etymology of each word and write it below each

Look up the definitions of each term & write them in your own words

• Remember, the definitions are in your JOURNAL already.

• The important thing for each definition is whether there is more solute INSIDE the cell or OUTSIDE the cell (or whether they’re equal)

• It’s also important to know whether water would be sucked INTO the cell or sucked OUT OF the cell.

Take the 3 pictures provided to you

• Decide which represents hypotonic, isotonic and hypertonic and glue them under the correct flap. Below each, show and explain which way water would move.

Set up a compare/contrast

• Do some research and then compare/contrast hypoglycemia and hyperglycemia using a Venn diagram or chart. Include the following:– Literal meaning of each (etymology)– Definition (in own words)– What causes each– What the effects are of each