It forms a fluid cushion around organs that helps to protect them from trauma:
Correct answer: D. Water
- A. Protein
- B. Lipid
- C. Vitamin
- D. Water
Explanation
The correct answer is Water. Water acts as a fluid cushion around organs, providing protection against trauma by absorbing shocks and distributing forces during movement. This property is vital for minimizing the impact on organs. In contrast, proteins, lipids, and vitamins each have different roles: proteins contribute to structural integrity and enzyme functions, lipids are involved in energy storage and membrane structure, and vitamins are essential for metabolic and physiological processes. None of these directly form a protective fluid cushion like water does.
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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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