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Multiple Choice
Which of the following is an example of a nucleotide?
A
Adenosine
B
Cytidine
C
Thymine
D
Adenosine triphosphate (ATP)
Verified step by step guidance
1
Understand the structure of a nucleotide: A nucleotide is composed of three components - a nitrogenous base, a five-carbon sugar (ribose or deoxyribose), and one or more phosphate groups.
Identify the components of each option: Adenosine, Cytidine, and Thymine are all related to nucleic acids, but they differ in their structure.
Analyze Adenosine: It consists of a nitrogenous base (adenine) attached to a ribose sugar, but it lacks phosphate groups, so it is a nucleoside, not a nucleotide.
Analyze Cytidine: It consists of a nitrogenous base (cytosine) attached to a ribose sugar, but like adenosine, it lacks phosphate groups, making it a nucleoside.
Analyze Adenosine triphosphate (ATP): It consists of the nitrogenous base adenine, a ribose sugar, and three phosphate groups, fitting the definition of a nucleotide.