DNA review

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 pairing rule in DNA?

Back

In DNA, adenine pairs with thymine (A-T) and cytosine pairs with guanine (C-G).

Front

What is a DNA nucleotide composed of?

Back

A DNA nucleotide is composed of three parts: a deoxyribose sugar, a phosphate group, and a nitrogen base.

Front

Where is DNA located in a cell?

Back

DNA is primarily located in the nucleus of eukaryotic cells.

Front

What is the function of DNA?

Back

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

Front

What is the structure of DNA?

Back

DNA has a double helix structure, consisting of two long strands of nucleotides twisted around each other.

Front

What is the role of the phosphate group in DNA?

Back

The phosphate group forms the backbone of the DNA strand, linking the deoxyribose sugars of adjacent nucleotides.

Front

What is the significance of the sequence of nitrogen bases in DNA?

Back

The sequence of nitrogen bases in DNA encodes the genetic information that determines the characteristics of an organism.

Front

What is replication in the context of DNA?

Back

Replication is the process by which DNA makes a copy of itself before cell division.