________ opens up one segment of the DNA helix during replication; ________adds complementary free nucleotides to the exposed DNA strand.
A. DNA helicase; DNA polymerase
B. DNA helicase; DNA ligase
C. DNA ligase; DNA polymerase
D. DNA polymerase; DNA ligase
E. DNA ligase; DNA helicase
Answer: A
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Answer the following statement true (T) or false (F)
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