AP Bio Insta-Review Topic 6.2: Replication

Front

What enzyme connects the Okazaki fragments on the lagging strand during DNA replication?

Back

Ligase

Front

What is the orientation of the two strands of DNA in relation to each other?

Back

Antiparallel

Front

In which direction is DNA read during DNA replication?

Back

3' to 5' direction

Front

What enzyme is responsible for synthesizing the new DNA strand?

Back

DNA polymerase

Front

Which enzyme is responsible for unwinding the DNA double helix by breaking hydrogen bonds between the strands?

Back

Helicase

Front

What are Okazaki fragments?

Back

Short sequences of DNA synthesized on the lagging strand during DNA replication.

Front

What is the role of DNA polymerase in DNA replication?

Back

DNA polymerase adds nucleotides to the growing DNA strand complementary to the template strand.

Front

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

Back

They indicate the directionality of the DNA strand, which is crucial for replication and transcription.

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 the leading strand and the lagging strand during DNA replication?

Back

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