9. what is the difference between covalent bonds and ionic bonds? *
1 point
covalent bonds transfer electrons; ionic bonds share electrons
covalent bonds transfer protons; ionic bonds share protons
covalent bonds share electrons; ionic bonds transfer electrons
covalent bonds share protons; ionic bonds transfer protons

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