10 Questions
What is the main structural difference between DNA and RNA?
DNA has a deoxyribose sugar, while RNA has a ribose sugar
Which of the following is a nucleoside analogue used in antiviral therapy?
Acyclovir
What is the structural level of organization for a nucleotide?
Primary
What is the importance of nucleoside and nucleotide analogues in medicine?
They are used to interfere with the replication and function of pathogens, such as viruses and cancer cells
What is the difference between a nucleoside and a nucleotide?
A nucleoside contains a nitrogenous base and a pentose sugar, while a nucleotide contains a nitrogenous base, a pentose sugar, and one or more phosphate groups
What is the orientation of the glycosidic bond in the syn conformation of a nucleotide?
The nitrogenous base is oriented in the same direction as the sugar
Which of the following is a physiologic mediator that is an adenosine nucleotide?
ADP
What is the structural component of coenzymes NAD and NADP that is derived from a nucleotide?
The adenine nucleotide
Which of the following is a structural component of the coenzyme S-adenosylmethionine (SAM), which is involved in methylation reactions?
Adenine
What is the orientation of the glycosidic bond in the anti conformation of a nucleotide?
The nitrogenous base is oriented in the opposite direction to the sugar
Test your knowledge of nucleosides, their composition, and glycosidic bonding in this biochemistry quiz. Learn about ribonucleosides, purines, and pyrimidines.
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