by: Admin_LouisPosted on: What particle is made up of two ‘down’ quarks and one ‘up’ quark? What particle is made up of two ‘down’ quarks and one ‘up’ quark?ProtonAtomElectron—>> Neutron Share this:TwitterFacebookLike this:Like Loading... Related posts:The third period in the evolution of political sociology relates to the role of __________What type of elementary particles create the strong force between quarks?What theoretical particle travels faster than the speed of lightHow are galaxies important to our existence?