Protons and neutrons, just like in the nucleus of every other element.
Emitted/given off. exo is a way to remember that is is going away. think of a flame. the heat is emitted off onto you.
The answer for the first question is A. Proton is the subatomic particles which adds most of the mass of an atom as well as the neutron since they have the same mass. Photon, on the other hand, is not one of the subatomic particles.
Interphase is not a phase of mitosis.
Its going to be 2.81 x 1023 atoms
