Final answer:
Escherichia coli (E. coli) is the type of bacteria that can divide itself 6 times in 20 minutes due to its fast reproduction rate through binary fission.
Step-by-step explanation:
The type of bacteria that divides itself 6 times in 20 minutes is Escherichia coli (E. coli), which is a common bacterium found in the intestines of humans and animals.
E. coli has a fast reproduction rate due to binary fission, a process where the chromosome copies itself and the cell divides into two genetically identical daughter cells. Under optimal growth conditions, E. coli can double its population every 20 minutes.
This rapid reproduction allows for the formation of a large bacterial colony from a single cell in a short period of time.