Home » Which of the following is the most abundant biomolecule on the earth? Carbohydrates MCQs Which of the following is the most abundant biomolecule on the earth? January 18, 2022 11 Views Q. Which of the following is the most abundant biomolecule on the earth? A. Lipids B. Proteins C. Carbohydrates D. Nucleic acids. Answer: Carbohydrates