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Weegy: VITAMIN A plays a primary role in vision and the development of body cells. User: Which is not considered an active form of vitamin A? Answer 1. retinal 2. retinoic acid 3. retinol 4. retinalogical Weegy: Retinalogical -is not considered an active form of vitamin A ***Vitamin A has three active forms (retinal, retinol and retinoic acid) User: The active form of vitamin D is called. Answer 1. coenzyme Q10 2. cholesterol 3. beta-carotene 4. calcitriol Weegy: The active form of vitamin D is called D. calcitriol. User: True or false? Ten to 15 minutes of daily sunshine will provide an adequate supply of vitamin D. Answer True False (More)

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Weegy: C. small intestine Because they dissolve in fat, vitamins A, D, E, and K are called fat-soluble vitamins. [ They are absorbed from the small intestines, along with dietary fat, which is why fat malabsorption resulting from various diseases (e.g., cystic fibrosis, ulcerative colitis, Crohn's disease) is associated with poor absorption of these vitamins. Fat-soluble vitamins are primarily stored in the liver and adipose tissues. With the exception of vitamin K, fat-soluble vitamins are generally excreted more slowly than water-soluble vitamins, and vitamins A and D can accumulate and cause toxic effects in the body. ] User: True or false? High doses of niacin can cause an uncomfortable flushing reaction of the face and arms, along with headache, blurred vision, and, in severe cases, liver damage. Answer True False (More)