DNA Structure and Function

Front

What is DNA?

Back

DNA (Deoxyribonucleic Acid) is the molecule that carries the genetic instructions for life. It is composed of two strands that coil around each other to form a double helix.

Front

What are the four nitrogen bases in DNA?

Back

The four nitrogen bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What is the complementary base to adenine?

Back

Thymine (T) is the complementary base to adenine (A).

Front

What is the complementary base to cytosine?

Back

Guanine (G) is the complementary base to cytosine (C).

Front

What are the sides of the DNA ladder made of?

Back

The sides of the DNA ladder are made of alternating sugars and phosphates.

Front

Where is most of the DNA found in a eukaryotic cell?

Back

Most of the DNA in a eukaryotic cell is found in the nucleus.

Front

What is a chromosome?

Back

A chromosome is a long, continuous thread of DNA that contains many genes. It is found in the nucleus of eukaryotic cells.

Front

What is a gene?

Back

A gene is a segment of DNA that contains the instructions for making a specific protein or set of proteins.

Front

What is the function of DNA?

Back

The function of DNA is to store and transmit genetic information that determines the traits of an organism.

Front

What is the structure of DNA?

Back

DNA has a double helix structure, consisting of two strands that are twisted around each other, with nitrogen bases paired in the center.