Why do helicase and gyrase need to work together?
A) Gyrase adds the RNA primer and helicase removes it.
B) Helicase unwinds DNA and gyrase relieves the torsional strain.
C) Helicase synthesizes DNA and gyrase prevents helicase from dissociating.
D) Gyrase synthesizes RNA primers and helicase.

Question

Quizplus · Accepted Answer

Helicase unwinds the double-stranded DNA molecule during DNA replication, but this process creates torsional strain ahead of the replication fork. Gyrase alleviates this strain by introducing negative supercoils into the DNA, making it easier for helicase to continue unwinding the DNA. Therefore, both enzymes need to work together to efficiently replicate DNA. The other choices are incorrect because they do not accurately describe the roles of helicase and gyrase in DNA replication.

Why Do Helicase and Gyrase Need to Work Together