Certain classes of drugs target the enzyme responsible for relaxing DNA supercoiling ahead of the replication bubble. By preventing this enzyme from reducing the strain, the DNA often experiences random breaks and fragments, ultimately killing the cell. Which enzyme is being targeted by this type of drug?

The enzyme being targeted by this type of drug is DNA topoisomerase or DNA gyrase.

Explanation: Replication requires not just a single DNA polymerase but different enzymes and proteins, each performing a specific task. DNA helicase separates the two parental DNA strands that act as templates in replication by moving along the DNA and separating the strand using chemical energy from ATP. DNA topoisomerase or DNA gyrase relieves the torsional strain or topological stress generated by DNA unwinding. DNA-binding proteins binds and stabilizes the separated single-stranded DNA. Primase synthesizes the short segments of RNA (RNA primers) which must be present on the template before DNA polymerase can begin to synthesize DNA.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.