3. Describe how metabolic rate can be determined for animals, and distinguish between
basal metabolic rate and standard metabolic rate.
4. Describe several body shapes that maximize external surface area in contact with the
environment.
5. Explain how animals with complex internal organization and relatively small surface
area to volume ratio can have adequate surface area for materials exchange with the
environment.
6. Describe the location and function of interstitial fluid.
7. Define homeostasis.
8. Distinguish between negative and positive feedback.