DNA Unit

Front

What is a hydrogen bond?

Back

A weak attraction between a hydrogen atom and another atom, which holds the bases together in the center of the double helical DNA molecule.

Front

What is a nucleotide?

Back

The monomer (subunit) of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base.

Front

Which base pairs with Guanine in DNA?

Back

Cytosine.

Front

Which base pairs with Adenine in DNA?

Back

Thymine.

Front

What is the shape of DNA?

Back

Double Helix.

Front

What are the two types of nitrogenous bases in DNA?

Back

Purines (Adenine and Guanine) and Pyrimidines (Cytosine and Thymine).

Front

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

Back

It links the sugar of one nucleotide to the sugar of another, forming the backbone of the DNA strand.

Front

What is the function of DNA?

Back

To store and transmit genetic information.

Front

What is complementary base pairing?

Back

The specific pairing of nitrogenous bases (A with T and G with C) in DNA.

Front

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

Back

It allows for the efficient packing of DNA and provides stability to the genetic material.