THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which enzyme breaks the hydrogen bonds between the two DNA strands in order to separate them in order to start replication?
|
|
Topoisomerase
|
|
|
Helicase
|
|
|
DNA polymerase
|
|
|
Ligase
|
Explanation:
Detailed explanation-1: -Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands.
Detailed explanation-2: -Hydrogen bonds in DNA replication are broken down by the helicase class of enzymes. This causes the double-stranded DNA molecule to unzip into two single strands, allowing each strand to be replicated.
Detailed explanation-3: -Helicases are enzymes that bind and may even remodel nucleic acid or nucleic acid protein complexes. There are DNA and RNA helicases. DNA helicases are essential during DNA replication because they separate double-stranded DNA into single strands allowing each strand to be copied.
There is 1 question to complete.