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Multiple Choice
Which of the following macromolecules is correctly paired with its corresponding subunit?
A
Proteins — Amino acids
B
Lipids — Monosaccharides
C
Nucleic acids — Fatty acids
D
Carbohydrates — Nucleotides
Verified step by step guidance
1
Step 1: Begin by understanding the concept of macromolecules and their subunits. Macromolecules are large biological molecules essential for life, and they are composed of smaller subunits. The four major types of macromolecules are proteins, lipids, nucleic acids, and carbohydrates.
Step 2: Recall the correct subunits for each macromolecule: Proteins are made up of amino acids, lipids are composed of fatty acids and glycerol, nucleic acids are composed of nucleotides, and carbohydrates are composed of monosaccharides.
Step 3: Analyze the given options: Proteins — Amino acids, Lipids — Monosaccharides, Nucleic acids — Fatty acids, Carbohydrates — Nucleotides. Compare each pairing to the correct subunit associations identified in Step 2.
Step 4: Identify the incorrect pairings: Lipids are incorrectly paired with monosaccharides (they should be paired with fatty acids and glycerol), nucleic acids are incorrectly paired with fatty acids (they should be paired with nucleotides), and carbohydrates are incorrectly paired with nucleotides (they should be paired with monosaccharides).
Step 5: Conclude that the correct pairing is Proteins — Amino acids, as this matches the established relationship between macromolecules and their subunits.