Question

The lagging strand is characterized by a series of short segments of DNA (Okazaki fragments) that will be joined together to form a finished lagging strand. The experiments that led to the discovery of Okazaki fragments gave evidence for which of the following ideas?
A) DNA polymerase is a directional enzyme that synthesizes leading and lagging strands during replication.
B) DNA is a polymer consisting of four monomers: adenine, thymine, guanine, and cytosine.
C) DNA is the genetic material.
D) Bacterial replication is fundamentally different from eukaryotic replication. The key shouldn’t be way longer than the distractors.

Answer 1

Answer: A

Explanation:

During the test that lead to the discovery of okazaki fragments on the lagging strand, a strand which is discontinuously synthesized with small DNA molecules to its own Primer RNA and was called okazaki fragments. The synthesis along the lagging strand is in 5' to 3' direction. As it moves, the primase synthesizes short RNA primer, to which the DNA nucleotides are added by DNA polymerase.

It was discovered that DNA synthesis is always in the 5' to 3'direction in both strands.

DNA polymerase is a directional enzyme that synthesizes leading and lagging strands during replication

Answer 2

Answer:

A) DNA polymerase is a directional enzyme that synthesizes leading and lagging strands during replication

Explanation:

DNA polymerase add nucleotide during DNA replication and move in the opposite direction on both DNA strands as the two DNA strands are anti-parallel and DNA polymerase add nucleotides from 5 to 3 directions.

The DNA polymerase will move towards the replication fork on one strand. On this strand called the leading strand, DNA polymerase will continually add nucleotide.

The DNA polymerase will move opposite the replication fork on another strand. DNA polymerase copies on this strand called Lagging strand in a discontinuous fashion, so this means series of short fragments or okazaki fragments.  Synthesizing the lagging strand as coping is discontinuous and subsequently linked together.