BIOD33H3 Study Guide - Comprehensive Final Exam Guide - Metabolism, Skin, Oxygen
20 Nov 2018
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Longer term changes are acclimatization, where animals are exposed to a condition for a period of time, for maybe about days to weeks, not months to years or seconds to min. Acclimatization to warm temp, animals exposed to this, their abilty to thermoregulate and maintain constant temp is enhanced, so better at maintaining constant temperature when exposed to heat. Animals that live at high altitudes, and their ancestors are also from there, the animals and people in these place have modifications in their hemoglobin, allowing them to survive in lower oxygen conditions, enhances oxygen affinity. These occur over generations of time, not over days or years. Also have changes that occur during development, As a tadpoles grows, it gets lungs and already has gills present, then loses gills, and as an adult it relies on lungs. Amphibians to some extent can use their skin to exchange gases. This exchange is usually for co2, and species dependent.
