DNA Structure and Replication

Front

What enzyme assembles the new strand of DNA?

Back

DNA polymerase is the enzyme responsible for assembling the new strand of DNA during replication.

Front

Why does DNA replicate?

Back

DNA replicates to make a copy before the cell divides, ensuring that each new cell has a complete set of DNA.

Front

When DNA replication is complete, each DNA molecule consists of:

Back

Each DNA molecule consists of one original strand and one new strand after replication.

Front

What is the first step in DNA replication?

Back

The first step in DNA replication is that DNA unzips, separating the two strands.

Front

Who published the double helix structure of DNA in 1953?

Back

James Watson and Francis Crick published the double helix structure of DNA in 1953.

Front

What are the building blocks of DNA?

Back

The building blocks of DNA are nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base.

Front

What are the four nitrogenous bases in DNA?

Back

The four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What is the role of helicase in DNA replication?

Back

Helicase is the enzyme that unwinds and separates the two strands of DNA during replication.

Front

What is semi-conservative replication?

Back

Semi-conservative replication is the process by which each new DNA molecule consists of one original strand and one newly synthesized strand.

Front

What is the function of ligase in DNA replication?

Back

Ligase is the enzyme that joins Okazaki fragments on the lagging strand during DNA replication.