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Classlancer IB Extended Essays
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Access top-scoring Extended Essays produced by students that have aced one of the IB's most feared assessments.

Chemistry EE
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Grade:
A
Research Question:
How does the boiling time (1min, 2min, 3min, 4min, 5min) affect the total antioxidant activity of red, green and yellow sweet bell peppers (Capsicum annuum), determined through the oscillation inhibition time of the Briggs- Rauscher Reaction and UV-Visible Light Spectrometry using the FRAP Assay?
276
Biology EE
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Grade:
A
Research Question:
How does application of an increasing concentration of nitrogen fertilization in the form of urea solutions (0, 25, 43, 80, 160 mg N/L), in the soil over a period of 2 weeks affect the biosynthesis of beta-carotene in Alternanthera sissoo (Brazilian Spinach) determined by spectrophotometric analysis?
273
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