Sterols are:
Correct answer: A. Lipid
- A. Lipid
- B. Protein
- C. Carbohydrate
- D. Both A and B
Explanation
Sterols, such as cholesterol, are a subgroup of lipids, characterized by their multiple-ring structure. They play crucial roles in cell membrane structure and serve as precursors for various hormones. Proteins are polymers of amino acids and have different functions, including catalyzing biochemical reactions and providing structural support. Carbohydrates are mainly energy sources composed of sugar units. Therefore, the correct classification for sterols is lipids.
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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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