Which of the following is true regarding the law of conservation of mass?

a) it dictates that the number of molecules on each side of a chemical equation must be the same.

b) it dictates that the number of atoms of each element must be the same on both sides of a chemical equation.

c) it states that the mass of the reactants must remain constant in order for a chemical reaction to proceed.

d) it does not apply to chemical reactions.

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

Anions are negative charged ions