Protoplasm of living cell can survive, if its water contents upto:
Correct answer: C. 70%
- A. 20%
- B. 10%
- C. 70%
- D. 50%
Explanation
Water is vital for the survival of cells as it facilitates biochemical reactions, aids in transportation within the cell, and helps maintain structural integrity. Most living cells have a water content of approximately 70% to 90%. This range allows cells to function effectively and maintain homeostasis. Option C, with 70% water content, is correct because it falls within this optimal range. Options A and B, with 20% and 10% respectively, are too low and would result in cellular damage. Option D, at 50%, while closer, is still generally insufficient for most cells to maintain their vital functions.
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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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