AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA REPLICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The enzymes responsible for adding nucleotides to the exposed DNA template bases are:
A
replicases
B
DNA polymerases
C
nucleotidases
D
helicases
Explanation: 

Detailed explanation-1: -During elongation, an enzyme called DNA polymerase adds DNA nucleotides to the 3′ end of the template. Because DNA polymerase can only add new nucleotides at the end of a backbone, a primer sequence, which provides this starting point, is added with complementary RNA nucleotides.

Detailed explanation-2: -One of the key molecules in DNA replication is the enzyme DNA polymerase. DNA polymerases are responsible for synthesizing DNA: they add nucleotides one by one to the growing DNA chain, incorporating only those that are complementary to the template.

Detailed explanation-3: -DNA polymerase is responsible for the process of DNA replication, during which a double-stranded DNA molecule is copied into two identical DNA molecules.

Detailed explanation-4: -RNA Polymerase II (RNA Pol II) is the enzyme that adds nucleotides to a new DNA chain produced during transcription.

Detailed explanation-5: -DNA polymerase is the primary enzyme which catalyzes the linking of the 3′ hydroxyl group of the end nucleotide to the 5′ phosphate of nucleotide to be added.

There is 1 question to complete.