Overcoming limitations of diffusion Evolution of exchange systems for distributing nutrients circulatory system removing wastes excretory system aa CO CO 2 2 NH NH 3 3 CO 2 NH 3 CO 2 CO 2 O 2 systems to support multicellular organisms O 2 aa CH NH 3 NH3 CO 2 CO 2 NH 3 NH 3 CO 2 CO 2 CO 2 NH 3 CHO aa Regulating the Internal Environment Water Balance & Nitrogenous Waste Removal 2006-2007Īnimal systems evolved to support multicellular life CH aa CHO O 2 O 2 aa CO 2 NH 3 aa CH CHO O 2 aa CO 2 CO 2 NH 3 NH 3 CO 2 intracellular waste CO 2 NH 3 O 2 CO 2 O 2 aa NH 3 NH 3 NH3 CO 2 CO 2 NH 3 CO 2 CO 2 CO 2 NH 3 CHO CH aa Diffusion too slow! extracellular waste Homeostasis Keeping the balance animal body needs to coordinate many systems all at once temperature blood sugar levels energy production water balance & intracellular waste disposal nutrients ion balance cell growth maintaining a steady state condition Regulators Two evolutionary paths for organisms regulate internal environment maintain relatively constant internal conditions conform to external environment allow internal conditions to fluctuate along with external changes thermoregulation osmoregulation regulator regulator conformer conformer ![]() ![]() Regulating the Internal Environment 2006-2007Ĭonformers vs.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |