BIO 203 Lecture Notes - Lecture 26: Allometry, Thermoregulation, Activation Energy
8 Dec 2017
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Basal metabolism: cost of existing, internal work. Physical activity: moment it becomes active, energy expenditure, external work. Adaptive thermogenesis: changes in heat production to maintain body temperature, internal work. Expenditure of energy to recover energy from food. 10-20% of energy lost to acquiring the energy. Maintenance of core body temperature is important. Increase by sunlight or thermal radiation, the ground too. Heat is loss when air moves pass to sweep away heat (convection by wind) Evaporation of water from animal will lower the body temperature. There are relationships between metabolism, water balance, heat. Slope of 1 represents direct relationship between oxygen and body mass. Slope of 0. 67 represents metabolic activity to surface area, for a warm-blooded animal, energy is exchanged with the outside environment of the surface of the animal. Mr = amb (the generalized form of the circled equation) Where: mr = metabolic rate a = metabolic rate when mass equals 1. Convert to mass-specific mr (divide by m):
