Phospholipids contain:
Correct answer: A. Hydrophilic heads and hydrophobic tails
- A. Hydrophilic heads and hydrophobic tails
- B. Long water-soluble carbon chains
- C. Positively charged functional groups
- D. Both 'B' and 'C'
Explanation
Phospholipids are essential components of cell membranes, characterized by their amphipathic nature. They have hydrophilic (water-attracting) heads made of a phosphate group and hydrophobic (water-repelling) tails composed of fatty acid chains. This unique structure allows them to form bilayers in water, creating cell membranes that protect and organize cells. Option A is correct because it delineates this structural feature. Option B is incorrect because phospholipid tails are hydrophobic and do not dissolve in water. Option C is incorrect because the functional groups in phospholipids are not typically positively charged. Option D is incorrect, as it combines two incorrect statements.
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