Multiple Choice
In the context of nucleic acids, which type of biomolecule is ATP (adenosine triphosphate) most like in overall structure?
11
views
1. Introduction to Biochemistry
Nucleic Acids
Multiple Choice
In the context of nucleic acids and cellular metabolism, ATP is classified as which of the following?
A
A deoxyribonucleotide triphosphate used primarily for DNA synthesis
B
A ribonucleotide triphosphate (a purine nucleoside triphosphate)
C
A nucleoside lacking phosphate groups
D
A pyrimidine nucleoside monophosphate
Verified step by step guidance1
Step 1: Understand the structure of ATP (adenosine triphosphate). ATP consists of the nitrogenous base adenine, a ribose sugar, and three phosphate groups attached in a chain.
Step 2: Recognize that ATP contains a ribose sugar, not deoxyribose, which means it is a ribonucleotide rather than a deoxyribonucleotide.
Step 3: Identify the nitrogenous base in ATP, which is adenine, a purine base (purines include adenine and guanine).
Step 4: Note that ATP has three phosphate groups, making it a triphosphate nucleotide.
Step 5: Combine these facts to classify ATP as a ribonucleotide triphosphate with a purine base, commonly used in cellular metabolism and as an energy currency.
Related Videos
Related Practice
