All of the following are subunits of DNA except:
Correct answer: D. Choline
- A. Deoxyribose sugar
- B. Phosphate group
- C. Nitrogenous base
- D. Choline
Explanation
The correct answer is Choline. DNA is composed of nucleotides, which include a deoxyribose sugar, a phosphate group, and a nitrogenous base. These components form the structural framework of DNA. Choline, on the other hand, is not a component of DNA; it is a component of phospholipids in cell membranes. Therefore, choline is the correct choice as it is not a subunit of DNA.
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