DNA Structure

Front

What is the structure of DNA?

Back

DNA is a double helix formed by two strands of nucleotides twisted around each other.

Front

What are the four nitrogenous bases in DNA?

Back

Adenine, Thymine, Cytosine, and Guanine.

Front

What is a nucleotide composed of?

Back

A nucleotide consists of a phosphate group, a sugar (deoxyribose), and a nitrogenous base.

Front

What type of bond holds the base pairs together in DNA?

Back

Hydrogen bonds hold the base pairs together.

Front

What is the function of DNA?

Back

DNA stores genetic information and provides instructions for the development and functioning of living organisms.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains deoxyribose sugar, while RNA is single-stranded and contains ribose sugar.

Front

What is the role of the sugar in a nucleotide?

Back

The sugar in a nucleotide connects the phosphate group and the nitrogenous base, forming the backbone of the DNA strand.

Front

What is complementary base pairing?

Back

Complementary base pairing refers to the specific pairing of nitrogenous bases: Adenine pairs with Thymine, and Cytosine pairs with Guanine.

Front

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

Back

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

Front

What are purines and pyrimidines?

Back

Purines are nitrogenous bases with a double-ring structure (Adenine and Guanine), while pyrimidines have a single-ring structure (Cytosine and Thymine).