All life forms contain “molecules of life”. These are

[amp_mcq option1=”Carbohydrates” option2=”Proteins” option3=”Nucleic acids” option4=”All of the above” correct=”option4″]

This question was previously asked in

UPSC NDA-1 – 2015

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The correct answer is All of the above. Carbohydrates, Proteins, and Nucleic acids (DNA and RNA) are fundamental classes of organic macromolecules essential for all known forms of life.

These three types of molecules play crucial roles: Carbohydrates are primary energy sources and structural components; Proteins perform a vast array of functions including enzymes, structural support, and transport; Nucleic acids carry genetic information (DNA) and are involved in protein synthesis (RNA). Lipids are also often considered a fourth major class of biomolecules.

These macromolecules are built from smaller repeating units (monomers): carbohydrates from monosaccharides, proteins from amino acids, and nucleic acids from nucleotides. Their presence and interactions are fundamental to cellular structure and function.

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