Slide 1Exchanging MaterialsSlide 3Circulatory Systems Reflect PhylogenySlide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 24Slide 25Slide 26Slide 27Slide 28Slide 29Slide 30Slide 31Slide 32Slide 33Slide 34Slide 35Slide 36Slide 37Slide 38Slide 39Slide 40Slide 41Exchanging Materials•Every organism must exchange materials with its environment.–This exchange ultimately occurs at the cellular level.Exchanging Materials•In unicellular organisms, these exchanges occur directly with the environment.•For most of the cells making up multicellular organisms, direct exchange with the environment is not possible.Circulatory Systems Reflect Phylogeny•Transport systems functionally connect the organs of exchange with the body cells.Sea levelPO2 =760*0.2094 = 159 mmHgPO2 =(760-18)*0.2094 = 155
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