Exploring metabolism, this content delves into the chemical reactions that sustain life, metabolic rates, and their ecological implications. It covers thermoregulation, basal and resting metabolic rates, Kleiber's Law, and practical applications for managing health and fitness through understanding BMR. Methods for estimating BMR, such as the Harris-Benedict and Mifflin-St Jeor equations, are also discussed.
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Metabolism is the network of chemical reactions that occur in living organisms to sustain life
Influence of Size, Age, Gender, and Genetics
Metabolic rate is influenced by an organism's size, age, gender, and genetic makeup
Impact of Environmental Temperature and Activity Level
Metabolic rate can be affected by environmental temperature and activity level
BMR and RMR are measures of energy expenditure at rest, with BMR being more accurate but RMR being more practical
Thermoregulation is the process by which organisms maintain their internal body temperature within certain boundaries
Active Regulation of Body Temperature in Endotherms
Endotherms, like mammals and birds, actively regulate their body temperature through metabolic heat production
Reliance on External Heat Sources in Ectotherms
Ectotherms, such as reptiles and amphibians, primarily rely on external heat sources to regulate their body temperature
The energy required for thermoregulation is a significant component of an organism's total metabolic expenditure
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______ is the intricate series of chemical processes in living beings that maintain life by transforming nutrients into energy and essential materials for development.
Metabolism
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Definition of Thermoregulation
Process by which organisms maintain internal body temperature within certain limits despite external changes.
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Difference between Endotherms and Ectotherms
Endotherms generate heat metabolically to regulate body temperature; ectotherms depend on environmental heat.
