Multiple Choice
Which atoms are found in all carbohydrates?
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1. Introduction to Biochemistry
Carbohydrates
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Which class of organic molecules does fructose belong to?
A
Amino acid
B
Monosaccharide
C
Nucleotide
D
Disaccharide
Verified step by step guidance1
Understand the question: The problem is asking to identify the class of organic molecules to which fructose belongs. The options provided are amino acid, monosaccharide, nucleotide, and disaccharide.
Recall the definition of a monosaccharide: Monosaccharides are the simplest form of carbohydrates, consisting of a single sugar unit. They are often referred to as simple sugars and include molecules like glucose, fructose, and galactose.
Analyze the structure of fructose: Fructose is a simple sugar with the molecular formula C₆H₁₂O₆. It is a hexose (six-carbon sugar) and contains a ketone functional group, making it a ketohexose.
Compare fructose to the other options: Amino acids are building blocks of proteins, nucleotides are the building blocks of nucleic acids, and disaccharides are composed of two monosaccharide units. Fructose does not fit into these categories.
Conclude that fructose belongs to the class of monosaccharides based on its structure and properties as a single sugar unit.
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