Microbot

Get rid of the entire first paragraph. It tells me nothing about why this school should admit you.
 
There are odd language choices throughout. A non-exhaustive list includes: "spawned," "finally reached my maturity." "imprint," "my pivotal point," "as proofs of excellence"
 
The second paragraph is too long, and isn't focused enough. Is this paragraph about your undergrad experience or about your extracurriculars? I don't think there is a need to list classes you took as an undergrad, since it'll appear on your transcript and you're not using the opportunity to talk about any of these classes. I'm also not sure if there is a need to mention "slightly marred" grades and explain them away, honestly the explanation sounds worse than the problem. 
 
If I were you, I'd start my SOP with the something like the contents of the third paragraph. It requires a bit of work on the language (missing articles and some awkward phrasing), but it actually tells the reader who you are and what you do. I'd put that front and center. Since this one is important, here are some in-line edits:
 
 
Later paragraphs are quite good. They could use some English language editing, but overall I like them a lot.
 
Since you need to submit this tomorrow, I think it's a better use of your time to work on the first few paragraphs. This should also help you bring this essay down to the length that was recommended to you. My suggestion would be basically to get rid of the first two paragraphs entirely. Start with a version of your third paragraph as the opener, or alternatively use the 4th paragraph as the opener (but shorten it a bit, because it's long-winded). So the narrative is -- I am interested in X types of questions; I think interdisciplinarity is very important. This became clear to me when the Venter team published their article about [blah] and I saw in that an opportunity to do [blah]. it inspired me to join the competition [blah] where I learned [blah]. In my own studies, I've embraced interdisciplinary in different ways, e.g. through my UG final project abotu [blah], my internship and experience in a biotech company. I've also done volunteer work as [blah] and teaching as [blah]. -- This could be two paragraphs, one about your broad interests and how that study influenced you, and one more detailed about your experiences with your project, internship, teaching, etc. Once you have this, take the first sentence in your current fourth paragraph and put it at the beginning of the fifth paragraph. The fifth paragraph can pretty much stay as is. I'm not sure that the "I will bring my experience as a person from a tropical region" etc. is relevant, since I'm not sure I see where else you say that you want to solve problems that are relevant to that part of the world. If it's important, I think you need to mention it as a goal early on. 
 
Good luck!