A mammalian cell contains 1.1 percentage:
Correct answer: D. RNA
- A. Protein
- B. Water
- C. DNA
- D. RNA
Explanation
The correct answer is RNA. In a mammalian cell, RNA makes up about 1.1% of the cell's total mass, reflecting its role in protein synthesis and other regulatory functions. Proteins are much more abundant, as they are integral to the cell's structure and operations, accounting for a larger portion of the cell's mass. Water, being the most prevalent component, constitutes over 70% of the cell's mass. DNA, although essential for genetic information, exists in smaller quantities relative to the total cell mass compared to RNA.
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About Classification of Biological Molecules
Biological molecules are classified as carbohydrates, lipids, proteins and nucleic acids, with water, minerals and vitamins also supporting cellular processes. The key distinctions involve their monomers, chemical bonds, structures and functions, including glucose and starch, fatty acids and triglycerides, amino acids and polypeptides, and nucleotides in DNA and RNA.
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