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/0072495
855/student_view0/chapter2/animation__how_o
smosis_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