This resource is an exemplar AQA A-level biology essay on the title ‘the importance and function of ions in biology’. This essay was awarded 23/25. To achieve full marks, slightly more above-spec knowledge should have been added.
This resource is intended as an example of how to structure and write an A-level biology essay. Remember that for a band 5 (21-25 marks) the essay should contain at least 4 well-developed, A-LEVEL QUALITY points relating both to function AND importance of a specific ion.
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