Easy
1 point
ID: #18435
Question
Which vitamin is not synthesised in body?
Options
1
Vit-A
Correct Answer
2
Biotin
Correct Answer
3
Vit-D
Correct Answer
4
Vit-K
Correct Answer
Explanation
Vitamin A cannot be synthesized by the human body and must be obtained from the diet (e.g., retinol or beta-carotene). Vitamin D is made in skin, and K and Biotin by gut bacteria.