Which of the following structures surround cells?
cell wall and nucleus
cell membrane and cell wall
cytoplasm and cytoskeleton
cell membrane and cytoplasm

Compare and contrast the bohr model and the electron cloud models of the atom.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

Carbon-14 undergoes radioactive decay in the reaction above. determine the type of radiation emitted in this reaction and describe what is happening to the nucleus during this reaction.