We Recommend Watching the Video with these Compatible Resources

• Sciencebook's Year 11 Human Biology Coursebook - add your notes to Chapter Two and highlight any key phrases.
  You can get your copy here.

• Sciencebook's Year 11 Human Biology Exam Guide - attempt the exam questions in Chapter One to consolidate your understanding.
  You can get your copy here.

• Sciencebook's Year 11 Human Biology Exam Paper for Metabolism - attempt the exam paper under time pressure to apply your knowledge under exam conditions.
  You can get your copy here.

Learning Outcomes

• Anabolic and catabolic reactions are types of biochemical processes

• Biochemical processes are regulated by catalysts known as enzymes

• Cellular respiration occurs in two locations depending on oxygen availability:

  • In the cytosol to catabolise (break down) organic compounds anaerobically

  • In the mitochondria to catabolise (break down) organic compounds aerobically

• Cellular respiration releases chemical energy in the form of adenosine triphosphate (ATP)

• Cells require materials for efficient metabolism

• Enzyme action is influenced by the following factors:

  • Temperature

  • pH

  • Inhibitors

  • Co-enzymes and co-factors

  • Concentration of reactants and products