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.

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What is the function of DNA?

Back

The primary function of DNA is to store and transmit genetic information that determines the traits and characteristics of living organisms.

Tags

NGSS.HS-LS3-1

Front

What are the four bases of DNA?

Back

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

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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.

Tags

NGSS.HS-LS1-1

Front

What is a chromosome?

Back

A chromosome is a long, continuous thread of DNA that contains many genes. Humans have 23 pairs of chromosomes.

Tags

NGSS.HS-LS3-1

Front

What is the role of the nucleus in a cell?

Back

The nucleus is the control center of the cell that houses the cell's DNA and is responsible for regulating gene expression and cell division.

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NGSS.MS-LS1-2

Front

What is Chargaff's rule?

Back

Chargaff's rule states that in DNA, the amount of adenine equals the amount of thymine, and the amount of cytosine equals the amount of guanine.

Front

What type of bond connects adenine to thymine?

Back

Adenine and thymine are connected by hydrogen bonds.

Front

What type of bond connects cytosine to guanine?

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Cytosine and guanine are connected by three hydrogen bonds.

Front

What is the complementary base to adenine?

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The complementary base to adenine is thymine.