Undergraduate / How a trillion cells function every day, every minute, every second to keep me alive? NUS essay [4]

I'm a new member and I really need help to write this essay for NUS.
This section is an opportunity for you to elaborate on the information you have provided earlier. You may wish to discuss a special talent, a personal experience or an activity that you have been involved in that is of relevance to the course that you are applying for at the university.

As there is only limited space (2000 characters), you are encouraged to present your ideas in focused and thoughtful manner.

Even as a child, I had always been fascinated with the way things work. How a trillion cells function every day, every minute, every second to keep me alive and yet a bullet, smaller than my thumb can kill me and all those cells in a fraction of a second. How I could be saying something from India, and my family living a thousand miles away can hear me, see me. I've always wondered why frogs can only croak, dogs can only bark, and cats can only meow. The first incident that got me interested in science happened when i was seven and i got chicken pox. My mother told me that I got chicken pox from a microbe that was smaller than a rice grain. I wondered how such a small thing can cause my body to get ugly spots all over my body.When i was ten, my teacher did a volcano experiment and it oozed out lava, and I thought that was the most fascinating thing I'd seen. It was also very interesting for me how I had my father's hands and my mother's eyes, but my hair is completely different. At NUS, I hope I get the opportunity to fulfill my hunger for knowledge.

I'm not sure how to elaborate it.