Egg Demo Page 22 Essential Question: How can I demonstrate membrane transport with an egg? ? Question Column Egg in VinegarEgg in SyrupEgg in Water L1 – Describe L2 – Explain L3 – Why Hypothesis: Observation: Diagram: Hypothesis: Observation: Diagram: Hypothesis: Observation: Diagram: Colnclusion - Set this up on page 21 in your journal. There is a copy of this page on your table. *be sure your table of contents is updated

What would happen if I place an egg into vinegar?

Let’s check your eggs! Send ONE person from your group to get your egg cup. Make observations of the egg and record them in your journal This person will pour out the vinegar and GENTLY rinse the egg. Place the egg back into your cup and bring it back to your table. As a group, make additional observations. What do you notice? How does the egg look different? How is it the same? Write what you see. Draw a picture of what the egg looks like now. Write a sentence in your Conclusion area about whether your hypothesis was right or wrong.

Now what?? Use the bottle at your table to cover the egg in syrup – just barely cover it! Don’t drown it. With your group, create a hypothesis about what you think will happen to the egg in syrup overnight (If I put an egg in syrup, then………). Send ONE member of your group to put the cup back on the counter.

Foldable Time: Title page 20 “Transport Foldables”

Solutions Foldable Fold the top of the paper down to make a tab. Put a THIN line of glue on your tab, then glue it to the bottom of page 20 (Transport Foldables). Write SOLUTIONS (Osmosis) above the paper.

BELL WORK: Copy and complete the concept map below: Molecule Transport HIGH to LOW LOW to HIGH Diffusion Facilitated Diffusion Osmosis Active Transport needs energy! small molecules water no energy! large molecules uses transport proteins

Title Page 21: Osmosis **We’re finishing notes. Only day this week!! **

Watch the video for an intro on what we’re learning about today. Cell Video

Diffusion of water through a selectively permeable membrane is called osmosis. Remember: SALT SUCKS I know that other molecules move too, that’s why we gave the movement of water a special name. This way everyone knows which molecule you’re talking about.

Divide the rest of your page into 3 sections. We’ll fill out each one as we go. IsotonicHypertonicHypotonic

ISOTONIC means “same strength” Under the picture, write this: equal concentration inside & outside NO VISIBLE CHANGE water moves evenly in & out At the very bottom, write and highlight this: ISO = same DRAW THIS!

HYPERTONIC means “above strength” Under the picture, write this: solute concentration HIGHER outside the cell water moves out of the cell CELL WILL SHRINK At the very bottom, write and highlight this: HYPER = HIGH, makes the cell DRY! DRAW THIS!

HYPOTONIC means “below strength” Under the picture, write this: solute concentration LOWER outside the cell water moves into the cell CELL WILL SWELL At the very bottom, write and highlight this: HYPO = LOW, makes the cell GROW! DRAW THIS!

If the inside of a cell is 95% water, what is the concentration of water in an isotonic, hypertonic, or hypotonic solution? What is the concentration of solute in each of those cases?

Exit Ticket: On the handout I gave you draw an example of each type of transport with arrows to show how the molecules move. Key: Blue = water Pink = Salt (small molecule) Green = Glucose (large molecule) Yellow Star = ATP Red arrow = direction molecule will move Label the High and Low concentration in red High Low