Apure substance that cannot be broken down into any other substance by chemical or physical means is a ?

A pure substance that cannot be broken down into any other substance chemical or physical means is a element.

Elements  are the elemnts have same numbers of protons or we can say that elements. It is made up of only one type of atom. example is hydrogen. In hydrogen one proton and one electron is present.

ur answer is e & d

explanation:

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.