Which of the following are paired dna bases? a=u ; g=c a=t ; g=u a=t ; g = c a=g ; u=c

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