Matters,+System+&Organisation

Unit Essential Questions: 1. Why do we need to respire? 2. Do the structure and organisation of the living system change when energy is released from them? 3. How are respiratory systems of animals organised efficiently to carry out its functions? 4. Can there by any metabolism without enzymes? - enzymes lower the activation energy of the matter, hence speeding up the action.

Unit Enduring Understandings: 1. Living organisms release energy within the biological molecule into forms they can use to carry out life processes. 2 Processes of the release of energy is affected by external environment. 3. The structure and organisation of the respiratory system is dictated by the function that it serves. 4. Metabolic pathway is a sequence of enzyme-controlled reactions.