Which of the following represents the most matter?
3.5 kg
350 g
3.5 x 10³ hg
3.5 x 10⁴ cg

In order to assess these masses, one must convert all the masses to a single a unit so that they can easily be compared...

3.5 kg  =  3.5 kg

350 g   =  0.35 kg

3.5 × 10³ hg = 3500 hg = 350 kg

3.5 x 10⁴ cg  = 35000 cg = 0.35 kg

∴ 3.5 × 10³ hg is the largest mass.

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