Athletes often eat carbohydrates before a competition. By eating lots of carbohydrates, they force their bodies to store extra glucose in their muscles and livers. In which type of molecule, do animals store extra glucose? A) Glycogen
B) Cellulose
C) Glucose
D) Starch

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass