What characteristic distinguishes true multicellularity from colonies of cells?

Anton van Leeuwenhoek made an important contribution to the development of the cell theory. How?a. He articulated that all organisms are made of cells.b. He articulated that all cells come from preexisting cells.c. He invented the first microscope and saw the first cell.d. He invented more powerful microscopes and was the first to describe the diversity of cells

Systems biology is mainly an attempt toa. analyze genomes from different species.b. simplify complex problems by reducing the system into smaller, less complex units.c. understand the behavior of entire biological systems by studying interactions among its component parts.d. build high-throughput machines for the rapid acquisition of biological data.