DNA Structure and Replication

Front

What is the structure of DNA?

Back

DNA is a double helix made up of two strands of nucleotides, which include 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 deoxyribose in DNA?

Back

Deoxyribose is the sugar component of DNA nucleotides, providing the backbone structure of the DNA molecule.

Front

What is the function of DNA polymerase?

Back

DNA polymerase is the enzyme responsible for adding complementary nucleotides to a growing DNA strand during replication.

Front

What does semiconservative replication mean?

Back

Semiconservative replication means that each new DNA molecule consists of one original strand and one newly synthesized strand.

Front

How do adenine and thymine pair in DNA?

Back

Adenine (A) pairs with thymine (T) through two hydrogen bonds.

Front

How do cytosine and guanine pair in DNA?

Back

Cytosine (C) pairs with guanine (G) through three hydrogen bonds.

Front

What is the role of helicase in DNA replication?

Back

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

Front

What is the significance of the 5' and 3' ends of DNA strands?

Back

The 5' and 3' ends refer to the directionality of the DNA strands, which is important for the synthesis and replication process.

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.