Water is described as a universal solvent primarily because its molecules are
Correct answer: B. polar
- A. non-polar
- B. polar
- C. ionised at all temperatures
- D. held together by covalent bonds between molecules
Explanation
The oxygen atom pulls the shared electrons away from the two hydrogens, leaving a partial negative charge on the oxygen and partial positive charges on the hydrogens. This polarity lets water surround and separate ions and other polar solutes, which is why almost every reaction in a cell happens in aqueous solution. The bonds between water molecules are hydrogen bonds, not covalent bonds.
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About Biological Importance of Water
Water supports life through its polarity, hydrogen bonding and ability to dissolve ionic and polar substances. Its high specific heat, heat of vaporization, cohesion, adhesion and incompressibility help regulate temperature, transport materials and maintain structure, while hydrolysis and osmosis depend directly on water.
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