BIO120H1 Chapter Notes -Thermogenesis, Brown Adipose Tissue, Ecophysiology

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20 Nov 2012
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BIO120H1 Full Course Notes
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BIO120H1 Full Course Notes
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Study of how organisms physiologically adapt to environments and what happens when environment changes: study short/long-term behavior and physiological adjustments organisms make in order to survive and. Water availability is also major focus in physiological ecology: all organisms contain water and expend energy to maintain pool of water and dissolved substrates. Key to success is ability for many species to adapt to external environmental fluctuations and maintain consistent. Homeostasis capacity for an animal to regulate its internal environment despite external changes: regulate different parameters in body (ph, oxygen, glucose/salt concentration) Thermoregulation ability to regulate body temp. Internal temp changes may affect many aspects of animal physiology (enzyme function, muscle activity, and energy metabolism) Rattle snakes become ball groups during time period to shedding. Ball is stable for 5hrs during hottest period of the day, while temps outside the ball exceed. Melanistic (dark-pigment skin) species warm up more quickly helps cordylid lizards remain active under cold conditions.

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