Oy mate, meh. during mitosis, the genetic material in a cell is replicated, and then the cell splits into two new cells. the two new cells are genetically identical to the original cell. which part of cell theory do these statements best support? a. all organisms are made up of many different types of cells. b. all cells come from pre-existing cells. c. both living and nonliving substances are made of cells. d. new cells can be spontaneously generated.

I believe a is the most reasonable one but im not too sure

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -