Edexcel IGCSE Biology 复习笔记 2.6.1 Energy

• Organisms need energy for things such as:
  • Chemical reactions to build larger molecules from smaller molecules
  • Muscle contraction to allow movement
  • Keeping warm (to maintain a constant temperature suitable for enzyme activity)

   

• Cellular respiration is an exothermic reaction that is continuously occurring in living cells
• The chemical process of cellular respiration releases energy from glucose
• The energy is transferred via the molecule Adenosine Triphosphate (ATP)
• ATP, produced in respiration in the mitochondria, is required for living processes to occur within cells and organisms

Uses of the energy released from respiration

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