Energy Metabolism


Transformation of energy

An important law of physics is the law of conservation of energy. According to this law energy can neither be created nor destroyed. It can, however, be transformed from one form into another. Forms of energy include chemical, heat, sound, electrical and light. 

What is metabolism?

  • Cells can build up complelx molecules from the simples products of digestion.
  • In cells, chemical processes release stored energy from the products of digestion. 

The rate at which energy is released from cells is known as the metabolic rate. Metabolism involves two processes: catabolism and anabolism.

Basal metabolic rate (BMR)

This is the rate of metabolism when the…


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