Organization in energy usage, organization in energy storage, organization in motion, organization in organ systems, organization in organs, organization in tissue, organization in cells, organization in molecules, organization in atoms.
^I would remove this.
Your essay seems to be fairly alright. It is fairly well written.
BUT in my opinion, discussing a book that you had to read as part of your AP program is not as impressive as discussing a book that you chose to. It forwards, to me at least, the following impression: your reading is not very broad, and because you yourself know this, you decided to conveniently, for this particular essay, discuss a book that you have already read because naturally, it would be easier.
I apologize if this is not the case, and if you were infact amazed by this book, but I would assume that the Admissions Commitee is looking to read your discussion of a book outside of your academic domain, or a book that you had to read because it is compulsory