Why is chemistry important in the study of biology? the body is composed of chemical elements. chemical reactions occur in the body. chemistry studies matter and energy. all of the above

All of the above, since:

Part of biology is the study of the human body. But not only that, chemistry is really everything, since everything is made of atoms, even you. Understanding atoms and chemistry helps us to understand physics, biology, and all the other sciences, due to how applicable it is. Chemistry is why we have modern inventions and medicine, even. So, knowing how chemistry plays into our everyday lives and what our bodies consume end up impacting the human body, as studied in biology. This incluses bacteria, viruses, and everything in between. :)