DNA Structure and Replication

Front

What is DNA?

Back

DNA stands for Deoxyribose Nucleic Acid, which is the molecule that carries genetic information in living organisms.

Front

What is the shape of DNA?

Back

DNA has a double helix shape, resembling a twisted ladder.

Front

What are the sides of the DNA ladder made of?

Back

The sides of the DNA ladder are made of deoxyribose sugars and phosphates.

Front

What is the process of DNA replication called when old strands are reused?

Back

DNA replication is said to be semi-conservative because each new DNA molecule contains one old strand and one new strand.

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 complementary 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 DNA polymerase in DNA replication?

Back

DNA polymerase is an enzyme that synthesizes new DNA strands by adding nucleotides complementary to the template strand.

Front

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

Back

The double helix structure of DNA allows for the efficient storage of genetic information and the accurate replication of DNA.

Front

What is a mutation in DNA?

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.