AP Bio Insta-Review Topic 6.2: Replication

Front

Which direction is DNA read during DNA replication?

Back

3' -> 5’

Front

Which direction is DNA synthesized during DNA replication?

Back

5' -> 3’

Front

What is the enzyme responsible for breaking hydrogen bonds between nitrogenous bases?

Back

Helicase

Front

What enzyme seals phosphodiester linkages in DNA?

Back

Ligase

Front

What enzyme is responsible for the synthesis of new DNA strands?

Back

Polymerase

Front

What is the role of helicase in DNA replication?

Back

Unwinds the DNA double helix by breaking hydrogen bonds between base pairs.

Front

Define the term 'replication fork'.

Back

The Y-shaped region where the DNA double helix is separated into two single strands for replication.

Front

What is the function of DNA polymerase?

Back

Synthesizes new DNA strands by adding nucleotides complementary to the template strand.

Front

Explain the significance of the 5' and 3' ends of DNA strands.

Back

DNA strands have directionality; nucleotides are added to the 3' end during synthesis.

Front

What is the function of primase in DNA replication?

Back

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