DNA Structure and Replication

Front

What is DNA replication?

Back

DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules.

Front

Which enzyme unwinds the DNA double helix during replication?

Back

Helicase.

Front

What is the basic structure of DNA?

Back

Double helix.

Front

If a DNA strand has 35% A, what percent T would be present?

Back

35%.

Front

What is the role of DNA polymerase in replication?

Back

DNA polymerase adds in the new bases following the base pair rules.

Front

What are the base pair rules in DNA?

Back

Adenine pairs with Thymine (A-T) and Cytosine pairs with Guanine (C-G).

Front

What is the function of ligase in DNA replication?

Back

Ligase joins Okazaki fragments on the lagging strand.

Front

What is the significance of the 5' to 3' direction in DNA replication?

Back

DNA strands are synthesized in the 5' to 3' direction, which is crucial for the addition of nucleotides.

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 segments called Okazaki fragments.

Front

What is the role of topoisomerase in DNA replication?

Back

Topoisomerase relieves the tension in the DNA helix ahead of the replication fork.