DNA REVIEW

Front

What is DNA?

Back

DNA (Deoxyribonucleic Acid) is the molecule that carries the genetic instructions for life. It is composed of two strands that coil around each other to form a double helix.

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 base pairing rule in DNA?

Back

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

Front

What is the role of the phosphate group in DNA?

Back

The phosphate group forms the backbone of the DNA structure, linking the sugar molecules together.

Front

Who proposed the base pairing rule?

Back

The base pairing rule was proposed by Erwin Chargaff.

Front

What is the significance of Chargaff's rules?

Back

Chargaff's rules state that in any given DNA molecule, the amount of Adenine equals Thymine and the amount of Cytosine equals Guanine.

Front

What is a nucleotide?

Back

A nucleotide is the basic building block of DNA, consisting of a sugar, a phosphate group, and a nitrogenous base.

Front

What is the structure of DNA?

Back

DNA has a double helix structure, consisting of two long strands of nucleotides twisted around each other.

Front

What is replication in the context of DNA?

Back

Replication is the process by which DNA makes a copy of itself before cell division.

Front

What enzyme is responsible for DNA replication?

Back

DNA polymerase is the enzyme responsible for synthesizing new DNA strands during replication.