This revision resource has been designed to include a range of activities that will engage the students whilst they assess their understanding of the content of topic B8 (Gas exchange and respiration) of the CIE IGCSE Combined Science specification for examination in June and November 2020 and 2021. Exam questions, quick tasks and quiz competitions such as “The BIG REVEAL” will challenge the students on their recall of the content as well as their ability to apply this knowledge.
The lesson was written to cover as much of the content as possible, but the following topics have received particular attention:
- The role of cilia, goblet cells and mucus in the trachea and bronchi
- The effects of the chemicals in tobacco smoke on gas exchange
- Efficient gas exchange at the alveoli
- The composition of inhaled and exhaled air
- Aerobic respiration as the chemical reaction that releases energy
- The uses of energy in the human body
This resource contains an engaging PowerPoint (54 slides) and associated worksheets and is ideal for use at the end of this topic or in the lead up to mocks or the actual terminal exams
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