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Science Ideas and Concepts

Scientific study requires a basic knowledge and understanding of ideas and concepts. This collection explains the ideas that are fundamental to Digestion Chemistry.

  • The human digestive system – Information Sheet

    The human digestive system consists of a long muscular tube and several accessory organs. It is responsible for food ingestion and digestion, absorption of digestion products and the elimination of undigested materials.

  • Digestion – breaking the large into the small – Information Sheet

    Digestion of food involves both mechanical and chemical processes. Through digestion, large food particles are converted into smaller components that can be readily absorbed into the bloodstream.  

  • Rate of digestion – Information Sheet

    Digestion of food involves chemical reactions that break up large food molecules into their ‘building block’ components. There are a number of factors that affect the rates of these reactions.

  • Large intestine function – Information Sheet

    Recent research has revealed that the large intestine and its resident bacterial population have key roles to play in determining our health, wellbeing and how we feel. It is much more than just a waste storage facility.

  • Unlocking the energy in foods – Information Sheet

     The foods we eat supply the energy needed by the body to drive its complex chemical, mechanical and electrical systems. Where does this energy come from, how is it locked into food molecules and how is it released?

  • Energy requirements of the body – Information Sheet

    Macronutrients supply the energy needed by the body to keep it functioning. The rate of energy release from macronutrients by chemical processes occurring in the body is known as metabolic rate.