Provitamin Study guides, Class notes & Summaries

RD Exam Prep: Vitamin and Minerals Questions and Answers 100% Pass Vitamin A - Answer- Properties/Functions: Group of fat-soluble retinoids; immune function, skin, essential for vision and reproduction, delayed formation of cataracts; 2 forms available in the diet including preformed vitamin A (retinol) and provitamin A (carotenoids) DRI: Males 900mcg/d and Females 700mcg/d Deficiencies: Nyctalopia (reversible night-blindness), vision loss, dry eyes, Bitot's spots (keratin build-up in e...

Formation of retinol from beta-carotene requires the presence of what B vitamin? A.ascorbic acid B.folic acid C.niacin D.pyrodoxal phosphate E.None of above - Niacin Dietary fat is not very important regarding the digestion and absorption of pre- and provitamin A forms. A.True B.False - False Within the nucleus, retinoic acid binds to ______ A.retinoic acid nuclear receptors B.Transcription factors C.Retinoid X receptors D.Retinoic acid response elements E.Both A and C - Retinoid X...

What are the fat soluble vitamins? - ADEK What is the precursor to vitamin A? - carotene Where is vitamin A stored? - the liver Where is vitamin A converted? - intestinal mucosal cells What is the toxic level of vitamin A? - 10,000 What is vitamin A defined as? - a provitamin- nutrient that changes to a vitamin What is vitamin A's function? - skin, vision What are sources of vitamin A? - yellow, orange fruits, dark green leafy vegetables, cantaloupe, fish, liver, carrots, fortified skim...

BIOD 121 Portage Module 4 Fully Solved Exam Guide Questions 2024. essential vitamins - correct answer 13 vitamins that animal cells need but can't synthesize found in both plant and animal sources vitamins produced by the body - correct answer vitamin K and biotin (gut flora) vitamin D (skin) vitamin A (from beta carotene) niacin (tryptophan) two criteria for vitamins - correct answer 1. must be consumed in the diet to maintain health. 2. symptoms of deficiency occur in its absence...

1. For a compound to be classified as a vitamin, it must a. be synthesized by the body. b. be required in large quantities. c. perform a vital function. d. be water soluble. ANS: C For a compound to be defined as a vitamin, it must be a vital, organic, dietary substance that is not a carbohydrate, fat, protein, or mineral and is necessary in only very small amounts to perform a specific metabolic function or prevent an associated deficiency. It also cannot be manufactured by the body...

Jean Inman- Vitamins and Minerals | 100% Correct Answers | Verified | Latest 2024 Version What are the fat soluble vitamins? - ADEK What is the precursor to vitamin A? - carotene Where is vitamin A stored? - the liver Where is vitamin A converted? - intestinal mucosal cells What is the toxic level of vitamin A? - 10,000 What is vitamin A defined as? - a provitamin- nutrient that changes to a vitamin What is vitamin A's function? - skin, vision What are sources of vit...

JMU Nutrition 280 Theimer Final Exam 2024 Vitamin -Answer-essential organic compounds needed in small amounts Divided into 2 groups based on -Answer-solubility in water or fat Water soluble vitamins -Answer-B and C Fat soluble vitamins -Answer-A, D, E, K Food groups that lack B12? -Answer-Grains, vegetables, fruits Food groups low in vitamin C? -Answer-Grains, dairy, protein Vitamin absorption occurs mainly in -Answer-the small intestine Compound that's the basis for the RDA for vitamin...

Vitamin C is best known for its role in preventing scurvy. It also is critical in the formation and maintenance of this protein found in all connective tissues in our body. - Answer-Collagen The main function of Vitamin E is as an antioxidant. It is prevalent in our fat tissue (adipose tissue) and cell membranes and specifically protects this lipoprotein from being oxidized. - Answer-LDL Phytochemicals are naturally occurring plant compounds with health promoting properties. Betacarotene is ...

Formation of retinol from beta-carotene requires the presence of what B vitamin? A.ascorbic acid B.folic acid C.niacin D.pyrodoxal phosphate E.None of above - Niacin Dietary fat is not very important regarding the digestion and absorption of pre- and provitamin A forms. A.True B.False - False Within the nucleus, retinoic acid binds to ______ A.retinoic acid nuclear receptors B.Transcription factors C.Retinoid X receptors D.Retinoic acid response elements E.Both A and C - Retinoid X...

BIO 121 Essentials in Nutrition: M4 Exam Questions With Answers 2023/2024 | Latest Answers Graded 100/100. Vitamins help to regulate and support a variety of processes including digestive processes, absorption and being an energy source. FALSE: Vitamins help to regulate and support a variety of processes including digestive processes, absorption and metabolism. Vitamins do not yield energy. False, Vitamins help to regulate and support a variety of processes including digestive processes, ...