DNA Structure and Replication

Front

What is the ORI in DNA replication?

Back

ORI stands for Origin of Replication, the specific location where DNA replication begins.

Front

What is the result of DNA replication?

Back

DNA replication results in two DNA molecules, each with one new strand and one original strand.

Front

Which enzyme prevents single-stranded DNA from reannealing?

Back

Single-stranded binding protein binds to single-stranded DNA and prevents it from reannealing.

Front

What does primase do in DNA replication?

Back

Primase synthesizes a short fragment of RNA that allows DNA polymerase III to bind.

Front

How many origins of replication can be represented in a DNA molecule?

Back

A DNA molecule can have multiple origins of replication; for example, a diagram may represent 4 origins.

Front

What is the role of DNA polymerase III?

Back

DNA polymerase III is the main enzyme responsible for synthesizing new DNA strands during replication.

Front

What is the function of helicase in DNA replication?

Back

Helicase unwinds the DNA double helix, separating the two strands to allow replication.

Front

What is the significance of the leading and lagging strands in DNA replication?

Back

The leading strand is synthesized continuously, while the lagging strand is synthesized in short fragments called Okazaki fragments.

Front

What are Okazaki fragments?

Back

Okazaki fragments are short sequences of DNA synthesized on the lagging strand during DNA replication.

Front

What is the role of ligase in DNA replication?

Back

Ligase joins Okazaki fragments together to create a continuous DNA strand.