IB Biology EE Example 1 (29/34)

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This essay scored 29/34 (Grade A) under the new 2018 IB Extended Essay marking criteria and is an example of a high quality EE. The EE subject was Biology and was written by someone who scored a 23/24 in their HL Biology IA.

Research Question: To what extent do different concentrations of Tetracycline (25 mg/L, 50 mg/L, 100mg/L, 150 ml/L, 200 ml/L, 250 ml/L, 300 ml/L) affect the growth of Triticum aestivum L?

This essay is an excellent example of the new structure of the EE as well as the level of research required to obtain an A in the extended essay. Any student hoping to achieve an A in their EE should consider this essay as a model for the new syllabus, especially if considering a science-based EE.

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