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In the context of nucleic acids, which statement best describes ATP (adenosine triphosphate)?
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1. Introduction to Biochemistry
Nucleic Acids
Scelta multipla
In the context of nucleic acids, ATP (adenosine triphosphate) is best classified as which type of biological molecule?
A
A triglyceride composed of glycerol esterified to three fatty acids
B
A ribonucleotide (a nucleotide derived from adenosine with three phosphate groups)
C
A polypeptide made of amino acids linked by peptide bonds
D
A disaccharide composed of two monosaccharides linked by a glycosidic bond
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Identify the structural components of ATP: it consists of an adenine base, a ribose sugar, and three phosphate groups.
Recall the major classes of biological molecules: carbohydrates, lipids, proteins, and nucleotides/nucleic acids.
Recognize that ATP contains a nitrogenous base (adenine) attached to a sugar (ribose), which together form a nucleoside; the addition of phosphate groups makes it a nucleotide.
Understand that triglycerides are lipids made of glycerol and fatty acids, polypeptides are chains of amino acids, and disaccharides are carbohydrates made of two sugars; ATP does not fit these categories.
Conclude that ATP is best classified as a ribonucleotide, a nucleotide derived from adenosine with three phosphate groups.
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