DNA Structure and Replication

Front

What are the three parts of a nucleotide?

Back

A nucleotide is made up of a sugar, a phosphate group, and a nitrogenous base.

Front

Which type of bond joins nitrogenous bases in DNA?

Back

Nitrogenous bases are joined by hydrogen bonds.

Front

If a DNA molecule is 18% Guanine, what percentage of Cytosine does it contain?

Back

18% Cytosine, 32% Adenine, 32% Thymine.

Front

What does it mean when DNA replication is described as semi-conservative?

Back

It means that each new DNA molecule consists of one old (parent) strand and one new strand.

Front

Which nitrogenous base does Guanine bond with?

Back

Guanine bonds with Cytosine.

Front

What are the four nitrogenous bases found in DNA?

Back

Adenine, Thymine, Cytosine, and Guanine.

Front

What is the role of DNA polymerase in DNA replication?

Back

DNA polymerase synthesizes new DNA strands by adding nucleotides complementary to the template strand.

Front

What is the structure of DNA commonly described as?

Back

The structure of DNA is commonly described as a double helix.

Front

What is the function of the phosphate group in a nucleotide?

Back

The phosphate group links the sugar of one nucleotide to the sugar of the next nucleotide, forming the backbone of the DNA strand.

Front

What is the base pairing rule in DNA?

Back

Adenine pairs with Thymine, and Cytosine pairs with Guanine.