DNA Basics

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 bases of DNA?

Back

The four bases of DNA are Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).

Front

What is complementary base pairing in DNA?

Back

Complementary base pairing refers to the specific pairing of nitrogenous bases in DNA: Adenine pairs with Thymine (A-T) and Cytosine pairs with Guanine (C-G).

Front

What is a nucleotide?

Back

A nucleotide is the basic building block of DNA, consisting of a nitrogen base, a phosphate group, and a 5-carbon sugar (deoxyribose).

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 DNA in cells?

Back

DNA stores and transmits genetic information, guiding the development, functioning, and reproduction of all living organisms.

Front

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

Back

The sequence of bases in DNA determines the genetic information carried by the DNA, influencing traits and functions in an organism.

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. RNA also has Uracil (U) instead of Thymine (T).

Front

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

Back

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

Front

What is the role of the sugar in a nucleotide?

Back

The sugar in a nucleotide (deoxyribose) provides structural support and connects to the phosphate group and the nitrogenous base.