The head of phospholipid molecule is polar (hydrophilic) due to:
Correct answer: B. Phosphate
- A. Fatty acids
- B. Phosphate
- C. Carboxylic acid
- D. Triacylglycerol
Explanation
Option B is correct. The head of a phospholipid molecule is polar (hydrophilic) due to the presence of a phosphate group. The phosphate group is negatively charged, which makes it attracted to water molecules. The water molecules surround the phosphate group, which helps to keep the phospholipid molecule stable in an aqueous environment. In addition to the phosphate group, the head of a phospholipid molecule may also contain other polar groups, such as a choline group or an ethanolamine group. These groups are also attracted to water molecules, which further contributes to the hydrophilicity of the head of the phospholipid molecule.
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