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

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

Select all that applyWhich of the following are the three forms of vitamin A?Multiple select question.MenaquinoneRetinoic acidRetinalRetinol

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

Vitamin E has 8 naturally occurring compounds known as either tocopherols or tocotrienols, which each have a wide variety of biological __________.Multiple choice question.activityavailability

The chemical name for 4 of the 8 forms of Vitamin E is ____.Multiple choice question.tocopherolsisomersphospholipids