Which of the following is best revealed by the bohr model? . a. electrons are found only within the nucleus of an atom.
b. protons orbit the nucleus of an atom in fixed proton shells.
c. neutrons orbit the nucleus of an atom in fixed neutron shells.
d. electrons orbit the nucleus of an atom in fixed electron shells.

The answer is d electrons orbit the nucleus of an atom in fixed electron shells

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later