DNA Replication

Front

What is the role of helicase in DNA replication?

Back

Helicase is the enzyme that unzips the DNA double helix to prepare for replication.

Front

Which enzyme is responsible for checking DNA for errors and fixing them?

Back

DNA Polymerase is responsible for checking DNA for errors and fixing them.

Front

What is the function of ligase in DNA replication?

Back

Ligase is the enzyme that fixes the Okazaki fragments on the lagging strand.

Front

How does DNA polymerase build new DNA along the leading strand?

Back

DNA polymerase builds new DNA continuously along the leading strand.

Front

In which direction is DNA built?

Back

DNA is built in the 5' to 3' direction, with new nucleotides added to the 3' end.

Front

What are Okazaki fragments?

Back

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

Front

What is the function of primase in DNA replication?

Back

Primase synthesizes a short RNA primer to provide a starting point for DNA polymerase.

Front

What is the difference between leading and lagging strands in DNA replication?

Back

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

Front

What is the role of RNA polymerase in DNA replication?

Back

RNA polymerase is not directly involved in DNA replication; it synthesizes RNA from a DNA template during transcription.

Front

What is the significance of the 5' and 3' ends of DNA?

Back

The 5' end has a phosphate group, while the 3' end has a hydroxyl group; DNA synthesis occurs in the 5' to 3' direction.