To account for preformed niacin in foods and niacin synthesized from tryptophan, niacin is expressed as ____.Multiple choice question.niacin equivalentsa provitaminUL of 35 mg

60 mg of tryptophan will produce ____ mg of niacin.Multiple choice question.6051100

Select all that applyWhich of the following are considered B-vitamins?Multiple select question.NiacinRiboflavinCholineThiamin

Niacin serves as a ______ in energy metabolism.Multiple choice question.catalystenzymecoenzyme

Which B-vitamin is synthesized from tryptophan?Multiple choice question.ThiaminNiacinRiboflavin

The B vitamin required as a coenzyme to metabolize carbohydrates and some amino acids is _____.Multiple choice question.folatebiotinthiaminvitamin B-12