Bacteria Essay

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8B Going for gold Key processes At the end of this unit… All pupils must: (WTL4) Identify, with help, relevant variables to control, change and measure. (L4) Make observations and identify patterns in data. Most pupils should: (L5) Record observations accurately and identify patterns in data using charts. (L5) Explain the importance of control experiments and sample size when carrying out an investigation. (L5) Make careful observations using a range of equipment and ICT. (L6) Use word equations for chemical reactions. Some pupils could: (L7) Identify anomalous results and evaluate evidence. (L8) Draw conclusions from data given in secondary sources and state whether this agrees with the conclusions drawn in the source material. Range and content At the end of this unit… All pupils must: (WTL4) Recognise that exhaled and inhaled air are different. (L4) Recall that digested food is needed for energy. (L5) Recall that oxygen is needed for aerobic respiration. Most pupils should: (L5) Recall the positions and functions of the organs in the respiratory/breathing and circulatory systems. (L6) Explain why tissues need a good blood supply. (L6) Describe some effects of poor oxygen supply. (L6) Explain the differences between inhaled and exhaled air. (L6) Explain the role of alveoli in gas exchange. (L6) Explain how the lungs are kept clean. (L6) Describe how glucose, oxygen and carbon dioxide are transported around the body by the circulatory system. (L7) Explain how respiration is similar and different to burning fuels. (L7) Describe aerobic respiration. Some pupils could: (L8) Recall the word and symbol equations for respiration. (L8) Describe how gas exchange is affected by damage to alveoli. Be prepared 8Ba Exploring 1 requires a visit from a PE teacher or trainer from a local sports centre. 8Bb Exploring 1 and 2 may require you to book the school hall. 8Bb

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