Answer:
An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. ... The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.
It is to create energy that the cell can use. it takes in oxygen to break down food molecules to get cellular energy for cell function
The most basic level of organization that is involved in converting fuel or food into forms of energy, are found and compose living things. These are called cells.
In order to determine if the ion is positively charged or negatively charged