The most abundant organic compounds in a mammalian cell:
Correct answer: B. Proteins
- A. Water
- B. Proteins
- C. Carbohydrates
- D. Lipids
Explanation
Proteins are the most abundant organic compounds in mammalian cells. They are essential for numerous cellular processes, including catalyzing metabolic reactions, DNA replication, responding to stimuli, and transporting molecules. Water, while the most abundant molecule overall in cells, is inorganic. Carbohydrates and lipids, though critical, are present in lesser amounts compared to proteins.
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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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