1.  Filtration – Filtration of internal fluids varies based on environmental factors  Osmoregulation – the cells ability to regulate water flow in response to environmental factors

2. Paramecium in fresh water Bony fish in sea water Bony Fish in fresh water

3. For each picture  Decide if the cells in the organism are hypertonic, hypotonic or hypotonic  Decide if the environment is hypertonic, hypotonic or isotonic  Decide if water will enter the organism or leave the organism  Decide how the organism may react to the environmental conditions

4. Paramecium in fresh water Bony fish in sea water Bony Fish in fresh water Cell – Hypertonic Environment – Hypotonic Water - pour in Adaptation - Contractile vacuole will pump excess water out Cell – Hypotonic Environment – Hypertonic Water – pulled out Adaptation – Organism will drink a lot of water and filter out salt Cell – Hypertonic Environment – Hypotonic Water - pour in Adaptation – large amounts of water will be excreted as urine

5. Facilitated Diffusion  Passive transport of solutes using a transport protein  Proteins are specific  Proteins have two conformations –Solute binds to the protein on one side –The shape of the protein changes –The solute is released and the protein reforms

6. Website http://www.northland.cc.mn.us/biology/Biolo gy1111/animations/transport1.html

7. Active Transport  Requires cell energy (ATP)  Materials move against the concentration gradient  Examples – Na+/K+ Pump and Proton pump (H+)  Cotransport – The active transport of one substance allows another to participate in facilitated diffusion (Example: H+ pump and sucrose)

8. Endocytosis (# 1-4)  Intake of large molecules, food, solids  Materials collect on the cell membrane  Pinches off and vacuoles are taken in

9. Types of endocytosis  Pinocytosis – Cell drinking, nonspecific  Phagocytosis – Cell eating, nonspecific  Receptor Mediated endocytosis – Molecules bind to receptors and form a “coated pit” before entering the cell

10. Exocytosis (#5-8)  Release of large molecules, solids and waste  Vacuole fuses with the cell membrane and contents are released

13. Website http://www.northland.cc.mn.us/biology/Biolo gy1111/animations/transport1.html

14. Na+/K+ pump  http://www.brookscole.com/chemistry_d/te mplates/student_resources/shared_resources /animations/ion_pump/ionpump.html http://www.brookscole.com/chemistry_d/te mplates/student_resources/shared_resources /animations/ion_pump/ionpump.html  http://highered.mcgraw- hill.com/sites/0072495855/student_view0/c hapter3/animation__sodium- potassium_exchange_pump__quiz_3_.html