The nucleus houses the genetic info of a cell. :)
They showed how organic molecules could be made from Earth's early atmosphere.
If you remove one light bulb in a series, the other will go out because a series only goes through one path of electricity
They are multicellular, heterotrophic, they have no respiratory organs, and their digestion is intracellular!
Answer:
Well, I'd assume the heart
Explanation:
because it pumps blood and oxygen and everything really relies on it.
it could also be other important organs such as the brain, heart, kidneys, liver and lungs, but the heart is the root of all the bodies functions working properly.