Concept explainers
Introduction :
Answer to Problem 4STP
Correct answer :
The correct answer is option (A) DNA helicase.
Explanation of Solution
Explanation/justification for the correct answer :
Option (A) DNA helicase. The enzyme DNA helicasewhich unwinds the double helix by breaking the bonds between two strands and exposes each of the two strands, so that they can be used as a template for replication. Thus, this is the correct answer.
The explanation for the incorrect answer :
Option (B). DNA ligase. DNA ligase is the enzyme that joins DNA fragments together to create one complete DNA strand. Thus, this is an incorrect option.
Option (C).DNA polymerase. It is the enzyme that is ultimately responsible for the creation and expansion of the new strands of DNA. Thus, this is an incorrect answer.
Option (D). DNA primase. DNA primase is the enzyme that attaches to each strand and assembles a DNA primer at which replication can begin. Thus, this is an incorrect answer.
Chapter 12 Solutions
Biology Illinois Edition (Glencoe Science)
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