Some _ provide insulation against atmospheric heat and cold.
Correct answer: A. Lipids
- A. Lipids
- B. Carbohydrates
- C. Nucleic acids
- D. Proteins
Explanation
The correct answer is Option A: Lipids. Lipids provide thermal insulation by forming a barrier that reduces heat exchange, allowing organisms to maintain a stable internal temperature. Fats and oils, which are types of lipids, are particularly effective in this role due to their low thermal conductivity. On the other hand, carbohydrates are primarily energy sources, nucleic acids are involved in genetic functions, and proteins have various roles but are not specialized for thermal insulation.
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About Biological Molecules
The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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