Phosphatidic acid upon combining with a nitrogenous base gives rise to:
Correct answer: B. Phosphatidylcholine
- A. Phosphatidic acid
- B. Phosphatidylcholine
- C. Phospholipid
- D. Lecithin
Explanation
The correct answer is Phosphatidylcholine. When phosphatidic acid combines with a nitrogenous base like choline, it forms phosphatidylcholine, a specific type of phospholipid that is abundant in cell membranes. Phosphatidic acid is incorrect because it does not itself combine with a nitrogenous base; it is a precursor. Phospholipid is too broad of an answer, as it refers to the general class of molecules formed, not the specific one created by this reaction. Lecithin is a mixture of phospholipids.
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