1. Cell Reproduction

2. Cell Reproduction– Binary Fission 4.1
1. Cells Reproduce by –
Cell Division
2. Cells must first grow to a certain _________ before dividing.
size

3. Cell Division
3. In a multicellular organism, cell division allows the organism to:
Grow new cells
Repair damaged cells
Make gametes (reproduce)

4. Prokaryotes They lack a nucleus They have a single chromosome
Remember…..
They lack a nucleus
They have a single chromosome
Include bacteria
How do they reproduce?

5. Prokaryotes: single-celled
4. In single-celled organisms, the organism reproduces by cell division.
This is a type of asexual reproduction because only 1 parent cell is involved.
5. The simplest type of cell division called binary fission occurs in bacteria
Watch Video on Binary Fission

6. Binary Fission 6. Definition:
A form of cell division in which a prokaryotic cell divides into two cells that identical in size and genetic content.

7. Main Steps in Binary Fission
A. The chromosome is copied. This process is called DNA Replication.
B. A new cell membrane and cell wall form between the copied chromosomes.
C. The cell pinches into 2 daughters cells that are identical in size and gene content.

8. E. Coli Dividing by Binary Fission