DNA: The Genetic Material

Front

What is a nucleotide?

Back

A nucleotide consists of a phosphate group, a 5-carbon sugar, and a nitrogenous base.

Front

Which nitrogen base forms hydrogen bonds with adenine?

Back

Thymine.

Front

What did Avery's experiments in 1944 show was responsible for transformation?

Back

DNA.

Front

What are pyrimidines?

Back

A class of organic molecules that contain a single ring of carbon and nitrogen.

Front

Which nitrogen base forms hydrogen bonds with thymine?

Back

Adenine.

Front

What are the two main types of nitrogenous bases in DNA?

Back

Purines and pyrimidines.

Front

What are purines?

Back

A class of nitrogenous bases that have a double ring structure, including adenine and guanine.

Front

What is the structure of DNA?

Back

DNA is a double helix formed by two strands of nucleotides.

Front

What is the role of DNA in cells?

Back

DNA stores genetic information and provides instructions for protein synthesis.

Front

What is complementary base pairing?

Back

The specific pairing of nitrogenous bases in DNA: adenine with thymine, and guanine with cytosine.