Question

Which of the following is incorrectly matched ?

• A. Amino acids - Proteins
• B. Fatty acids - Deoxynucleotides
• C. Glucose - Polysaccharides
• D. Nucleoside triphosphate - Nucleic acids

Hint:

Memorize the four main classes of biological macromolecules and their monomers:

\textbf{Carbohydrates} (Polysaccharides) \(\rightarrow\) \textbf{Monosaccharides} (e.g., glucose)
\textbf{Proteins} \(\rightarrow\) \textbf{Amino acids}
\textbf{Nucleic Acids} (DNA/RNA) \(\rightarrow\) \textbf{Nucleotides}
\textbf{Lipids} \(\rightarrow\) \textbf{Fatty acids} \& \textbf{Glycerol}

Answer 1

The Correct Option is B

Step 1: Concept Overview:
The task is to identify the mismatched monomer-polymer pair.
Step 2: Detailed Analysis:
Analyzing each pair:

(A) Amino acids - Proteins: Correct. Proteins are polymers of amino acids linked by peptide bonds.
(B) Fatty acids - Deoxynucleotides: Incorrect.

Fatty acids are components of lipids (fats and oils), along with glycerol.
Deoxynucleotides are monomers of DNA (a nucleic acid), consisting of a deoxyribose sugar, a phosphate group, and a nitrogenous base.
Fatty acids and deoxynucleotides do not have a direct monomer-polymer relationship.
(C) Glucose - Polysaccharides: Correct. Polysaccharides (starch, glycogen, cellulose) are polymers of glucose.
(D) Nucleoside triphosphate - Nucleic acids: Correct. Nucleic acids (DNA and RNA) are polymers of nucleotides. Nucleoside triphosphates (ATP, GTP, CTP, TTP) are activated precursors for nucleic acid synthesis. During polymerization, two phosphate groups are removed, and the remaining nucleotide incorporates into the chain.
Step 3: Conclusion:
"Fatty acids - Deoxynucleotides" is the incorrect pair, as they belong to different macromolecule classes.