Plan – 50 minute lesson Can students name and identify molecules and their key functional groups on slide 3. Alternatively ask them if the can draw out an amino acid, carboxyl group, ester bond etc on the show me boards. Share with students the definition of metabolism on slide 4. Demo screaming jelly baby to illustrate catabolism on slide 5, alternatively there is a link to a video clip if this isn’t possible. Students complete the ‘making nylon’ practical to illustrate anabolism. Use slide 6 to support this. Use slide 7 to see if pupils can explain in their own words the difference between anabolism and catabolism.

Molecules to metabolism Must: be able to outline the words metabolism, anabolism and catabolism Should: be able to give examples of metabolism, anabolism and catabolism Could: be able to give word equations and link these with the examples

Starter – name these compounds

Metabolism Metabolism is the web of all the enzyme catalysed reactions in a cell or organism Metabolism is the sum of all the chemical reactions that happen in a cell Consists of pathways by which one type of molecule is transformed into another, in a series of small steps.

Demo: Screaming Jelly baby This demonstrates Catabolism. Catabolism is the breakdown of complex molecules into simpler molecules including the hydrolysis of macromolecules into monomers. Examples include: Digestion of food in the mouth, stomach and small intestine Cell respiration in which glucose or lipids are oxidized to carbon dioxide and water Digestion of complex carbon carbons in dead organic matter by decomposers

Class practical: Making Nylon Rope This illustrates anabolism. Although nylon is a synthetic polymer, the joining together of the molecules to make a larger molecule is exactly what anabolism is all about. Real examples include: Protein synthesis using ribosomes DNA synthesis during replication Synthesis of complex carbohydrates including starch, cellulose and glycogen

Plenary: In your own words…. Outline the differences between: Metabolism, catabolism and anabolism Share these with the class