Multiple Choice
In nucleic acid synthesis, which enzyme catalyzes the formation of phosphodiester bonds to join individual nucleotides into a growing DNA or RNA strand?
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1. Introduction to Biochemistry
Nucleic Acids
Multiple Choice
In nucleic acids, ATP contains which pentose sugar?
A
2-deoxyribose
B
Ribose
C
Fructose
D
Glucose
Verified step by step guidance1
Recall that nucleic acids are composed of nucleotides, each containing a nitrogenous base, a phosphate group, and a pentose sugar.
Understand that DNA contains the sugar 2-deoxyribose, while RNA contains the sugar ribose.
Recognize that ATP (adenosine triphosphate) is a nucleotide involved in energy transfer and is structurally related to RNA nucleotides.
Since ATP is a ribonucleotide, identify that the pentose sugar in ATP is ribose, not 2-deoxyribose.
Note that fructose and glucose are hexose sugars and are not components of nucleotides in nucleic acids.
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