The amino acid from which niacin synthesized is_______________?
Correct answer: D. Tryptophan
- A. Tyrosine
- B. Histidine
- C. Threonine
- D. Tryptophan
Explanation
Tryptophan can be converted into niacin through the kynurenine pathway, although the conversion is inefficient and requires vitamin B6. Tyrosine, threonine and histidine are not niacin precursors.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Vitamins and Minerals
77 free Vitamins and Minerals MCQs from Biochemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biochemistry questions like this
Biochemistry is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Vitamins and Minerals questions
Angular cheilosis is frequently associated with deficiency of______________?
Collagen formation is affected in deficiency of_____________?
Niacin & riboflavin help in_____________?
Coenzyme A contains which of the following vitamins_______________?
Which of the following is the poorest source of vitamin C ?
Pernicious anaemia occurs in___________?