Which of the following is not a component of DNA?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Thiamine
Explanation:
- Thiamine:
- Thiamine is not a component of DNA; it is a vitamin (Vitamin B1) involved in cellular metabolism.
- Adenine, Guanine, and Cytosine:
- These are nitrogenous bases found in DNA. DNA consists of four nitrogenous bases:
- Adenine (A) and Guanine (G) (purines)
- Cytosine (C) and Thymine (T) (pyrimidines).
Note: Do not confuse thiamine (Vitamin B1) with thymine, which is a pyrimidine base in DNA.