This essay / exemplar is listed under Biology in the 2015 examination archive. The catalogue session is May 2015. The information below helps you identify the document before opening the complete PDF. Subject, year and session labels come from the archive catalogue; the original cover remains the reference if a label differs. A file is not automatically suitable for your current syllabus simply because its subject name matches.
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Peterson
In her Extended Essay, showed a very thorough and accurate approach to the experimental investigation on the
effect of pre-soaking times of oatmeal (prior to ingestion) on the digestive breakdown by alpha amylase and its
correlation with the glycemic index.
The underlying ideas that helped her come up with a focused research question, the development of a method and the
analytical and statistical tools that would allow for a reasoned argumentation were obtained through thorough research
and the consultation of numerous scientific sources.
Although the method itself followed a relatively simplistic routine by using an iodine starch assay and a colorimeter to
quantify the digestive breakdown of the starch contained in the grain, had to spend a lot of time in preliminary
trials in order to fine-tune the specifications in set up and controlled experimentation. During that time, always
considered the alterations to the method carefully, and by doing so developed a great sense for the scientific inquiry.
Throughout the experimental phase, engaged herself thoroughly and completely independently with the correct
use and relevance of the apparatus.
also displayed a great deal of independency and responsibility, barely requiring any outside help.
In addition to the applied techniques and procedure, the analytical component of Extended Essay was elaborated
on in detail and with the support of the well referenced research studies. The analysis of the data collected has been
performed according to an appropriate choice of mathematical and statistical tools. The use of the Spearman's rank-test
to test for a correlation between the obtained results and the predicted glycemic index the subsequent interpretation,
were an extension to the already established results and allowed for a more meaningful and deeper interpretation of
the data.
Throughout the interview, 's knowledge and understanding of the performed investigation became even more
apparent. She clearly pointed out the significance and relevance of this investigation for real life situations and was able
to deliver ample amount of scientific support for her results.
File information
Subject
Biology
Document type
Essay / exemplar
Year
2015
Session
May 2015
Level
Not labelled in the archive
Paper
Not labelled
Examination zone
Not labelled in the archive
Language
English
File size
1.5 MB
Pages
25
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