Question

Major difference between replication in bacteria and animal cell is that

• A. Bacterial cell do not use topoisomerase in their replication
• B. Replication is conservative in bacteria
• C. DNA glycosylase performs the function of DNA helicase in bacteria
• D. There is only one origin of replication in bacteria

Answer 1

The correct option is D There is only one origin of replication in bacteria

The bacterial cell is the prokaryotic organism with circular double-stranded DNA as the genetic material. The animal cells are the eukaryotes which have linear double-stranded DNA. The major difference between these two cells is that the bacterial cell DNA possess only one site known as ori site where the replication starts. In the case of the animal cell, there are many sites where the replication starts and gets completed.

Thus, the correct answer is option D.