Biochemistry : Nucleic Acids Quiz

*Theme/Title: Nucleic Acids
* Description/Instructions
A nucleic acid is a nitrogen-containing biological polymer that is involved in the storage and transmission of genetic information. The monomer that makes up a nucleic acid is a nucleotide. Each nucleotide has three parts: a monosaccharide, a phosphate base, and a nitrogen base. The phosphate group is constant, but the sugar and the nitrogen base vary. Nucleotides are strung together in a chain that contains alternating sugar and phosphate groups.

Deoxyribonucleic acid (DNA) consists of two long nucleotide chains bound together in a double helical structure. DNA contains four nitrogen bases: adenine, thymine, guanine and cytosine. These nitrogen bases pair up in a specific sequence: adenine to thymine and guanine to cytosine. DNA stores genetic information in cells.

Ribonucleic acid (RNA) differs from DNA in that thymine is never found; instead adenine pairs to uracil. RNA contains the sugar ribose whereas DNA contains deoxyribose. RNA is a single helix, where DNA is a double helix. RNA allows cells to use the information in DNA to make proteins. This quiz covers the basics of DNA and RNA. Select the best answer from the choices.

Group: Chemistry Chemistry Quizzes
Topic: Biochemistry

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