Which is a characteristic of the part of the atom marked "A"?

It contains most of the mass.
It is negatively charged
It is mostly empty space.
It is composed of electrons.

How is mitosis different in plants and animals? a. in animals, the cell membrane pinches together. b. in plants,the dna is one circular chromosomes. c. in plants, there are no sister chromatids. d. in animals, a new cell wall forms.