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Chapter 8

Energy and Enzymes

EBook

Chapter 8: Energy, Metabolism, and Enzymes

Kick-Start Your Metabolic Engine!

8.1 The Role of Energy in Living Systems

  • The laws of thermodynamics apply to living systems
  • The flow of energy connects living things with the environment

8.2 Metabolism

  • ATP delivers energy to anabolic pathways and is regenerated via catabolic pathways
  • Energy is extracted from food through a series of oxidationreduction reactions
  • Chemical reactions are governed by the laws of thermodynamics

8.3 Enzymes

  • Enzymes remain unaltered and are reused in the course of a reaction
  • The shape of an enzyme determines its function
  • Enzymes increase reaction rates by lowering the activation energy barrier
  • Biology Matters: Enzymes in Action

8.4 Metabolic Pathways

Metabolic Rates, Health, and Longevity

Biology in the News: Phys Ed: A Workout for Your Bloodstream

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