Selectivity and Permeability Osmosis Permeability - Keeps inside safe Evolve to deal with salinity Diffusion: letting molecules move like water Osmosis: diffusion of water across the cell membrane Cell membrane lets water through it and other small molecules Organisms are effected by temperature Animals adapt to amount of Water and salt in their bodies and around them Osmoconformers: Can tolerate large range of sea water Osmoregulate: control how much salinity change in their body Extract oxygen from gills Most organism can’t live below 0 temp Too cold effects the cells and metabolic and reproduction and growth and color Surface to Volume: amount of surface area relative to the total volume. Determine the size of the organism and how nutrients, waste, and gases move in and out Group 2 Balance by releasing salt and urine Balance by use envir from outside and inside Animals adapt to amount of Water and salt in their bodies and around them Osmoconformers: Can tolerate large range of sea water Osmoregulate: control how much salinity change in their body Group 1 Diffusion: High concentration to low concentration Cell membrane that allows things to move in and out. Blocks some stuff. Water can pass but other molecules cannot pass through as easily Water moving in and out to swell or shrink Many organisms are sensitive to salinity Allow to alter metabolism Org are greatly effected by temp metabolic temp are faster at high temp and are slower at colder temp Marine organism adapt to temp Ecotherms: cold blodded Endotherm: warm blooded Poalr bears live best in cold temp b/c of enzymes Homotherms: maintain a stable interanal temp Polikotherms: body temp change with surrounding temp Materials like nutrients, waste, gases, move in and out surface of marine organisms Surface to volume ratio determine how fast heat flows Size of organism. Sm organism have a high ratio than large animals Balance cells Diffusion: molecules move from high to low Cell membrane seltivly permeable allows some stuff to pass through Organisms that maintatin interanal envir Osomoregualte Maintain internally by controlling water of asomaitc pressure by controlling water and salt concentration Maintain salt and water in body Group 2 Phycological that maintain cell membrane Group 1 To regulate intake its salt water Diffusion Net movement of high concentration to low concentration Movement of water across a semi permeable membrane from an area of low conectration to high concentration Regulate the transport of material entering and exiting the cell Have gills Some animals go through chemosynthesis Group1 Salinity can effect the denisity of ocean water. This can effect the movement of ocean currents and marine life, which may need to regulate its intake of salt water. Diffusion: net movemement of anything generally from a region of high concentration to a region of lower concentration. Med tablet. Alka seltzers dissolve into water Osmosis: movement of water moleules through a slectivly permable membrane from a region of high water concentration to a low water concentration Cell membrane regulates the transport of materials eneting and exiting the cell, provides protection Group 2 Regardless of envir conditions, able to balance between water and salt materials Loose water through gills and skin. Fish pump salt to urine Osmoconfers: Based on the envir. Internal conditions change based on outside conditions Organism survive in water based on cell nutrients and oxygen Determines the physiology of animals Help improve organism chance to envir Surface to volume ratio is used to help explain the connection between structure and function and process occurring to surface volume
