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TOPIC 11 LEARNING OUTCOMES 1. Anatomy a. Study of biological form of organism 2. Physiology a. Study of biological functions organism preforms 3. Why are form and function closely correlated? Examples? a. Bc certain forms are needed to perform certain functions. b. Ex. Long tongue-like proboscis of hawkmoth is structural adaptation for feeding. Some beaks of birds important in breaking open nut shells or pecking at trees for insects to get food. 4. Fick’s law of diffusion 3 factors that increase/decrease rate of exchange of materials across membrane & equation a. Surface area x concentration difference / thickness of membrane b. Surface area of membrane c. Concentration difference between 2 compartments separated by membrane d. Membrane thickness 5. Exchange? a. To transport nutrients, waste, and gases across membranes b. Substances dissolved in aqueous medium diffuse and are transported across cell membrane 6. Some adaptations to exchange? a. Multicell organisms w sac body lpan have body walls only 2 cell layers thick to increase diffusion b. Flat animals decrease distance between cells & environment to increase diffusion c.
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