APBIO- Chpt 44 Sec B “ Regulation of Body Temperature ” (Prior knowledge for Goldfish Homeostasis Lab). 1B. Students will be able to list and explain four physical processes that account for heat loss or heat gain. 2B. Students will be able to compare and contrast ectotherms and endotherms.
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2B. Students will be able to compare and contrast ectotherms and endotherms.
3- EXTRA. Students will be able to describe how goldfish breathe and the role of homeostasis.objectives
Q10effect- most enzyme-mediated reactions increase by a factor of 2-3 for every 10 degrees Celsius temperature increases.
Although different species of animals are adapted to different environmental temperatures, each animal has an optimal range.
Thermoregulation- maintains body temperature so cells can function.Regulation of Body Temperature
2B. Ectotherms have body temperatures close to environmental temperature; endotherms can use metabolic heat to keep body temperature warmer than their surroundings.
Water then continues through gill arches and passes over gills.
Each gill has two rows of thin membrane gill filaments which stick out into water flow.
Each gill filament composed of many rows of lamellae (thin, disc-like membranes with capillary network).
Water flows across lamellae. Oxygen and carbon dioxide are exchanged directly across the capillary membrane.
Fish can extract up to 85% of available oxygen out of the water.
Since water contains only 2-5% of the available oxygen that air at sea level does, such a high efficiency is extremely important.Goldfish