Strand 4: Life Science PO 3. Explain the importance of water to cells. PO 4. Analyze mechanisms of transport of materials (e.g., water, ions, macromolecules) into and out of cells: passive transport active transport
Announcements: 1) Everyone has started their month #1 observations for the HIC project 2) Come see me at lunch or after school to make up test grade Red Onion Cells! https://www.youtube.com/ watch?v=nHWUAdkYq4Q
The phospholipid bilayer has pores (holes) to allow SOME materials through that are small enough to fit through the pores: Like WATER Cells NEED water to survive water passes in and out of the cell membrane through the pores (holes) to maintain equilibrium
How do our cells obtain water to survive? Through the process of OSMOSIS: Movement of water through a cell membrane from an area of HIGH concentration to LOW concentration.
-This is Passive Transport: Movement of water without using energy Water will always try to reach equilibrium (equal amounts of water inside and outside of the cell) Solute Vs Solvent
Water will always try to reach equilibrium (equal amounts of water inside and outside of the cell) IF there is more water outside the cell than inside, and a high solute concentration inside the cell, THEN the water will move
into the cell. IF there is LESS water outside the cell than inside and a high solute concentration outside the cell, THEN the water will move out of the cell
Red Onion Cells One More Time! https://www.youtube.com/ watch?v=nHWUAdkYq4Q Write in your Journal I am looking for you to reference OSMOSIS and vocab terms. -How are isotonic sports drinks are meant to work? -How are they different from water
-How are they different from a fizzy soda? HW DUE Friday Journal Checks Must have all notes complete Test corrections due Friday (NO EXCEPTIONS)
*optional cannot use a late pass* Finish cell webquest if you didnt finish in class Can earn back pts you missed. Example: #2: Lets say I chose the answer A:
Nucleus as part of my test corrections I would write: #2: Correct answer: B: Phospholipid Bilayer because the above structure is composed of hydrophobic tails and hydrophilic tails which are essential in the semipermeable cell membrane
How Osmosis Works How Osmosis Works https:// youtu.be/w3_8FSrqc-I Using an Egg to visualize Osmosis
https://youtu.be/ SSS3EtKAzYc The best Osmosis Rap Song you will ever hear.. True Story Real osmotic disasters https:// youtu.be/HqKlLm2MjkI
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