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

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

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

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

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

Website gy1111/animations/transport1.html

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)

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

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

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

Website gy1111/animations/transport1.html

Na+/K+ pump  mplates/student_resources/shared_resources /animations/ion_pump/ionpump.html mplates/student_resources/shared_resources /animations/ion_pump/ionpump.html  hill.com/sites/ /student_view0/c hapter3/animation__sodium- potassium_exchange_pump__quiz_3_.html