Question

question 1 of 10 which molecule is active first during dna replication? a. dna polymerase b. dna ligase c. adenine d. helicase enzyme

Explanation:

DNA replication begins with unwinding the double - helix. Helicase enzyme breaks hydrogen bonds between base pairs, unwinding the DNA. DNA polymerase (A) synthesizes new strands after unwinding. DNA ligase (B) joins Okazaki fragments. Adenine (C) is a nucleotide base, not an enzyme for initial replication action. So, helicase acts first.

Answer:

D. Helicase enzyme