HAPPY MONDAY Bellwork 1 Turn in PAGE 36

HAPPY MONDAY! Bellwork: 1. Turn in PAGE 36 (Osmosis Worksheet) and PAGE 33 (Egg Lab) 2. Briefly sketch this experimental set-up. 3. In 34 words, explain why this phenomenon happens.

Unit 2 – Cells/Molecule Transport Definitions Due Friday (10/2/15) All Parts Due Tuesday (10/6/15) 1. Cell 2. Nucleus 3. Prokaryote 4. Eukaryote 5. Endosymbiotic Theory 6. Cell Membrane 7. Permeable 8. Impermeable 9. Semi-Permeable 10. Organelle 11. Chloroplast 12. Hypotonic 13. Isotonic 14. Hypertonic 15. Osmosis 16. Concentration 17. Diffusion 18. Active Transport 19. Facilitated Diffusion 20. Equilibrium 21. Mitochondria 22. Endoplasmic Reticulum 23. Ribosomes 24. Golgi Bodies 25. Lysosome 26. Cytoplasm

Egg Lab Quiz

Essential Question PG 34 In what other manner do materials move across a cell membrane? Standard B. 4 B – Investigate and explain cellular processes, including homeostasis, energy conversions, transport of molecules, and synthesis of new molecules

Recap: Osmosis and diffusion do not use energy.

The function of protein channels in the cell membrane is to make it easy for certain molecules to cross the membrane. This process is known as facilitated diffusion. (help!)

Facilitated diffusion does not require energy. Particles still move from an area of high concentration to an area of low concentration.

Facilitated Diffusion High No Energy n Co n ce n tio tra nt ie ad Gr Low

Sometimes cells move materials against a concentration difference. This process is known as active transport.

This process requires energy. Active transport is carried out by transport proteins found in the membrane.

Active Transport NEEDS ENERGY and PROTEIN High n Co n ce n tio tra nt ie ad Gr Low

Endocytosis is the process of taking large amounts of material into the cell by means of enfoldings of the cell membrane.

Exocytosis forces contents out of a cell when a vacuole fuses with the cell membrane.

PG 37 HW: Osmosis Practice Problems

Molecule Transport Foldable PG 35 Step 1 – Color (Lipid Heads– Green, Lipid Tails – Blue, Proteins- Purple) Step 2 - With the Cell Membrane facing up, fold your paper in half (Hot Dog Style) Step 3 - Cut 3 slits on the segments ONLY on the half of the paper facing you. Step 4 - On the half facing up – Separate into 4 Segments and write the Diffusion, Osmosis, Facilitated Diffusion and Active Transport (in that order) – Create concrete spellings.

• Diffusion, Osmosis, Facilitated Diffusion, Active Transport • Does it use energy? • What’s moving? Water OR Solutes • Is it moving from High to Low OR Low to High? • Does it move through the Phospholipid Bilayer OR Protein Channel? SUGAR WATER ENERGY Direction of particles