DNA History, Structure, and Replication

Front

What is DNA replication?

Back

The process by which a cell makes an identical copy of its DNA, resulting in two identical DNA molecules.

Front

How many molecules of DNA are produced during replication?

Back

2 Identical molecules of DNA.

Front

What is the structure of a nucleotide?

Back

A nucleotide consists of a deoxyribose sugar, a phosphate group, and a nitrogen base.

Front

What are the four nitrogen bases in DNA?

Back

Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).

Front

What is Chargaff's rule?

Back

A and T, C and G always occur in equal amounts in a DNA molecule.

Front

Where does DNA replication occur in a cell?

Back

In the nucleus.

Front

What is the role of the deoxyribose sugar in DNA?

Back

It forms the backbone of the DNA molecule, linking the phosphate groups and nitrogen bases.

Front

What type of bond holds the nitrogen bases together in DNA?

Back

Hydrogen bonds.

Front

What is the significance of the double helix structure of DNA?

Back

It allows for the compact storage of genetic information and provides stability to the DNA molecule.

Front

What enzyme is responsible for unwinding the DNA during replication?

Back

Helicase.