Question

which is a part of the cell theory? cells come from pre-existing cells cells have a nucleus organisms with one cell must be seen with a microscope organisms must have more than one cell to live

Explanation:

Cell theory states that all cells come from pre - existing cells (one of its key tenets). Prokaryotic cells lack a nucleus, so "cells have a nucleus" is wrong. The need for a microscope to see unicellular organisms is not part of cell theory. Unicellular organisms can live with one cell, so "organisms must have more than one cell to live" is wrong.

Answer:

cells come from pre - existing cells