Question

Which of the following is not a biomolecule?

• A. Methane
• B. Ammonia
• C. HCl
• D. None of the above

Answer 1

The correct option is D None of the above

A biomolecule is any molecule that is produced by living organisms, including larger macromolecules such as proteins, carbohydrates, lipids, and nucleic acids; as well as smaller molecules such as primary metabolites, secondary metabolites, and other natural products. A generalised term for this class of materials, is biological materials.

The bacteria in our gut produce methane as a byproduct of digestion. Ammonia is produced as a byproduct of protein metabolism and HCl is produced by our very own stomachs to digest everything we eat, making all the three, biomolecules.