Vertebrate circulation - PowerPoint PPT Presentation

Circulation and Gas Exchange Chapter 42

Circulation and Gas Exchange Chapter 42. Overview: Trading with the Environment. Every organism must exchange materials &amp; energy with environment Exchanges ultimately occur at the cellular level. In unicellular organisms, exchanges occur directly with environment.

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Animal Circulation

Animal Circulation. AP Biology Unit 6. Invertebrates with Gastrovascular Cavities. Don ’ t have a true circulatory system Material exchange (gases, nutrients, wastes) with the environment occurs through diffusion Why is diffusion effective here?

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1.03k views • 19 slides

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