Answer:
Binary fission, cell wall, doubles, cell membrane
Step-by-step explanation:
During binary fission, a bacterium reproduces asexually by copying its genetic information, called a chromosome. The chromosomes separate to opposite sides of the cell. The cell wall begins to grow between the 2 chromosomes. The bacterium doubles its size. A new cell membrane forms between the two new chromosomes, dividing the cell into two identical cells.