The most abundant biomolecules on Earth*1 pointproteinslipidsOption 5carbohydratesnucleic acids
Question
The most abundant biomolecules on Earth
- proteins
- lipids
- carbohydrates
- nucleic acids
Solution
Answer
The most abundant biomolecules on Earth are carbohydrates. This is primarily due to the prevalence of polysaccharides like cellulose, which is a major component of plant cell walls. Cellulose is the most abundant organic polymer on the planet, serving not only as a structural component in plants but also as a vital part of the carbon cycle.
While proteins and nucleic acids (like DNA and RNA) are critical for life and perform numerous functions within biological systems, their overall abundance is less when compared to carbohydrates. Proteins serve as enzymes, structural components, and signaling molecules, but they are made up of amino acids that are less common than the simple sugars that comprise carbohydrates.
Lipids are vital for cell membranes and energy storage, but again, they do not match the sheer abundance of carbohydrates in nature. Overall, the structural roles and energy storage functions of carbohydrates contribute to their status as the most abundant biomolecules on Earth.
Final Answer
Carbohydrates are the most abundant biomolecules on Earth.
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