BIOL 243 Lecture Notes - Lecture 1: Great Bustard, The American Naturalist, Clock

• School: University of Calgary
• Department: Biology
• Course: BIOL 243
• Professor: Steven Michael Vamosi

Document Summary

Distinguish and predict vmp, vmr, and vmax in moving organisms. Tucker (1975) the energetic cost of moving about. Energyinput = energyrespiration + energyproduction + energyactivity + energyexcretion. In topics a & b, energyrespiration was emphasized: it"s a big cost, particularly for endothermic homeotherms below their thermoneutral zone. Common activities: find food, avoid predators, exclude competitors, mate. Topic d considers energyactivity, which we"ll cover soon! Nagy et al. (1999; annual review of nutrition 19:247) Metabolism during physical activity (anaerobic) glycolysis to produces. Fatigue caused by buildup of fermentation-caused lactic acid in tissues ( ph in muscle cells metabolic acidosis ) Oxygen debt must eventually be paid back when physical activity ends (see blue zone in next slide). Rest allows lactic acid to be metabolically removed. 6 g p j s d r a w d. Aerobic metabolism: in the presence of o2, pyruvate used in citric acid cycle (no lactic acid).