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Multiple Choice
Which of the following molecules is a building block for a polysaccharide?
A
Glucose
B
Fatty acid
C
Amino acid
D
Nucleotide
Verified step by step guidance
1
Identify the definition of a polysaccharide: Polysaccharides are long chains of monosaccharide units bonded together. They are carbohydrates and serve as energy storage or structural components in cells.
Understand the role of glucose: Glucose is a monosaccharide, which is a simple sugar and the most common building block for polysaccharides such as starch, glycogen, and cellulose.
Examine the other options: Fatty acids are building blocks of lipids, amino acids are building blocks of proteins, and nucleotides are building blocks of nucleic acids.
Determine the correct building block: Since polysaccharides are made from monosaccharides, and glucose is a monosaccharide, glucose is the correct building block for polysaccharides.
Conclude the reasoning: Based on the definitions and roles of each molecule, glucose is the only option that serves as a building block for polysaccharides.