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

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

Which of the following is the term used for the biologically active forms of vitamin A?Multiple choice question.RetinoidsTocopherolsPhylloquinoneAscorbic acid

Among the following, which does not directly contribute Vitamin À to your body that is good for healthy eyesight?*1 pointA. CarrotsB. LettuceC. РарауаD. Squash

Select all that applyThe sources of retinoids, the preformed source of vitamin A, include _____. Multiple select question.beef liverfortified milkcarrotsfortified margarine

Multiple Select QuestionSelect all that applyWhich of the following are properties of vitamin A?Multiple select question.Vitamin A is water soluble and can be found in fluids such as blood and gastric juices.Vitamin A can be synthesized by the pancreas when needed.Vitamin A helps maintain healthy skin.Vitamin A is a part of the vision receptors in the eye.Vitamin A must be obtained through diet.