AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA REPLICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
First step to DNA Replication.
A
DNA strands bind together.
B
Build Polymerase.
C
Unzip double helix structure of the DNA.
Explanation: 

Detailed explanation-1: -The first step in DNA replication is to ‘unzip’ the double helix structure of the DNA? molecule. This is carried out by an enzyme? called helicase which breaks the hydrogen bonds? holding the complementary? bases? of DNA together (A with T, C with G).

Detailed explanation-2: -The first step in DNA replication is to separate or unzip the two strands of the double helix. The enzyme in charge of this is called a helicase (because it unwinds the helix). The point where the double helix is opened up and the DNA is copied is called a replication fork.

Detailed explanation-3: -Key enzyme involved in DNA replication, it is responsible for ‘unzipping’ the double helix structure by breaking the hydrogen bonds between bases on opposite strands of the DNA molecule.

Detailed explanation-4: -The first step of replication is “unzipping” the DNA molecule.

Detailed explanation-5: -During DNA replication, an enzyme called DNA helicase “unzips” the molecule of double-stranded DNA.

There is 1 question to complete.