Up Quarks: Up quarks are another type of elementary particle that have a positive charge and also reside in the nucleus of atoms.
Protons: Protons are composite particles made up of two up quarks and one down quark. They carry a positive charge and contribute to the overall mass of an atom.
Neutrons: Neutrons consist of two down quarks and one up quark. They have no net electric charge but contribute to the mass of an atom.