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 (A), Thymine (T), Cytosine (C), and Guanine (G).

Front

What base pairs with Adenine in DNA?

Back

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

Front

What base pairs with Guanine in DNA?

Back

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

Front

What is a nucleotide composed of?

Back

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

Front

What is the role of the phosphate group in DNA?

Back

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

Front

What is the significance of the 3' end in DNA?

Back

The 3' end refers to the third carbon in the sugar molecule of a nucleotide, which is important for DNA replication and transcription.

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 complementary base pairing?

Back

Complementary base pairing is the specific pairing of nitrogenous bases (A with T and G with C) in DNA.

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.