Which molecule is the monomer (building block) of nucleic acids?

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Study for the 9th Grade Biology SOL Test. Prepare with flashcards and multiple choice questions, each featuring hints and explanations. Get ready for your exam!

Multiple Choice

Which molecule is the monomer (building block) of nucleic acids?

Explanation:
Nucleic acids are polymers built from repeating units called nucleotides. Each nucleotide contains a sugar, a phosphate group, and a nitrogenous base. The sugar and phosphate form the backbone of the strand, while the bases encode genetic information in their sequence. This makes the nucleotide the basic building block of DNA and RNA. The other options are monomers for different biomolecules—amino acids make proteins, fatty acids form fats, and a sugar molecule is a component of a nucleotide but not the monomer itself.

Nucleic acids are polymers built from repeating units called nucleotides. Each nucleotide contains a sugar, a phosphate group, and a nitrogenous base. The sugar and phosphate form the backbone of the strand, while the bases encode genetic information in their sequence. This makes the nucleotide the basic building block of DNA and RNA. The other options are monomers for different biomolecules—amino acids make proteins, fatty acids form fats, and a sugar molecule is a component of a nucleotide but not the monomer itself.

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