.Which vitamin is present only in foods of animal origin?a.Riboflavinb.Vitamin B12c.The inactive form of vitamin Ad.Pantothenic acid

Which vitamin has foods of animal origin as its only reliable food source and is the only vitamin that contains a mineral as part of its structure?Multiple choice question.Vitamin B-6BiotinVitamin B-12Niacin

Vitamin B-12 is found in ______ foods only.Multiple choice question.animalfortifiedplantfresh

Preformed vitamin A as a retinoid is found in the foods of animal origin as _______.Multiple choice question.retinolalpha-tocopherolluteinbeta-carotene

____________________ is the form of vitamin A found in animal-derived foods.答案选项组Retinoic acidRetinalRetinolNo answer text provided.

Vitamins isolated from foods are classified as ____.Multiple choice question.provitaminsnaturalprevitaminssynthetic