Multiple Choice
In the context of nucleic acids, ATP (adenosine triphosphate) is best classified as which type of molecule?
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1. Introduction to Biochemistry
Nucleic Acids
Multiple Choice
In adenosine triphosphate (ATP), what is the name of the pentose sugar component?
A
Glucose
B
Ribose
C
Fructose
D
2-deoxyribose
Verified step by step guidance1
Identify the structure of ATP (adenosine triphosphate), which consists of three main components: a nitrogenous base (adenine), a pentose sugar, and three phosphate groups.
Recall that the pentose sugar in nucleotides can be either ribose or deoxyribose, depending on whether the molecule is RNA or DNA related.
Understand that ATP is a ribonucleotide, meaning it contains the sugar ribose, which has a hydroxyl group (-OH) attached to the 2' carbon of the sugar ring.
Differentiate ribose from 2-deoxyribose by noting that 2-deoxyribose lacks the hydroxyl group at the 2' carbon, which is characteristic of DNA nucleotides, not ATP.
Conclude that the pentose sugar in ATP is ribose, as ATP is involved in energy transfer in cells and is part of RNA-related molecules.
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