Multiple Choice
Which sugar is found in the backbone of DNA?
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4. Biomolecules
Nucleic Acids
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following substances is classified as a nucleic acid?
A
Polysaccharide
B
RNA
C
Fat
D
Amino acid
Verified step by step guidance1
Step 1: Understand the classification of biomolecules. Biomolecules are broadly categorized into carbohydrates, lipids, proteins, and nucleic acids. Each category has distinct structural and functional characteristics.
Step 2: Define nucleic acids. Nucleic acids are macromolecules that store and transmit genetic information. They are composed of nucleotide monomers, which consist of a sugar, a phosphate group, and a nitrogenous base. Examples include DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Step 3: Analyze the options provided. Polysaccharides are carbohydrates made of sugar monomers, fats are lipids composed of glycerol and fatty acids, and amino acids are the building blocks of proteins. RNA, however, is a nucleic acid composed of nucleotides.
Step 4: Match the correct classification. RNA fits the definition of a nucleic acid because it is involved in genetic information processing and is made of nucleotide monomers.
Step 5: Conclude that RNA is the correct answer, as it is the only substance listed that is classified as a nucleic acid.
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