Provitamin Study guides, Class notes & Summaries
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RD Exam Prep: Vitamin and Minerals Questions and Answers 100% Pass
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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...
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FNDH 620 Exam 3 | Questions with 100% Correct Answers | Verified | Latest Update 2024
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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...
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Jean Inman- Vitamins and Minerals | 100% Correct Answers | Verified | Latest 2024 Version
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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...
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BIOD 121 Portage Module 4 Fully Solved Exam Guide Questions 2024.
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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...
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Chapter 07: Vitamins Nix: Williams' Basic Nutrition and Diet Therapy, 15th Edition
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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...
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Jean Inman- Vitamins and Minerals | 100% Correct Answers | Verified | Latest 2024 Version
- Exam (elaborations) • 14 pages • 2024
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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...
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JMU Nutrition 280 Theimer Final Exam 2024
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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...
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HMGT 2460 Unit 3 Exam Questions & Answers Already Graded A+
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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 ...
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FNDH 620 Exam 3 | Questions with 100% Correct Answers | Verified | Latest Update 2024
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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...
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BIO 121 Essentials in Nutrition: M4 Exam Questions With Answers 2023/2024 | Latest Answers Graded 100/100
- Exam (elaborations) • 19 pages • 2023
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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, ...
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