I'm sorry but thats not vague at all, if anything its much more specific than any essay i have every seen!
Start at the top and work you way down, the best approach would be to reflect and tell them everything they want but in a story. I too was a bio major and this should be nothing like a lob report! SSpics it up get creative but remain professional
May I suggest Paul Bodines book on B-school essays....its highly regarded on this site and I loved it too.
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