Final answer:
Thiamine (vitamin B₁) does not play a role in DNA synthesis; instead, it assists in carbohydrate utilization, appetite maintenance, and normal brain metabolism. Other B vitamins, like folate and B12, are involved in DNA synthesis. Therefore correct option is B
Step-by-step explanation:
The correct answer to the question "Which of the following is not a function of Thiamin (B₁)" is B. DNA synthesis. Thiamine, also known as vitamin B₁, is essential for several physiological functions including:
- Utilization of carbohydrates in the body, which is a part of metabolism.
- Maintenance of good appetite.
- Normal brain metabolism, where it acts as a coenzyme in the form of thiamine pyrophosphate (TPP) in oxidative decarboxylation and transketolation reactions, crucial for glucose metabolism.
However, thiamine does not facilitate DNA synthesis. This process requires other B vitamins, such as folate and vitamin B12, which act as co-enzymes that facilitate DNA synthesis. Therefore, thiamine's role is unrelated to the synthesis of DNA.