The study of biology is important because it focuses on

The study of The environment and every thing in between.

It focuses on different animal species, including our own, and tells us how we grow, and, how to fight off different hazards to our bodies.
Hope this helped!

I’m not exactly sure what your trying to ask, but if it’s how an organelle is similar to a body system or a part a nucleus is like a in function. but i don’t fully understand what you’re trying to ask