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DTN 240 Chapter 10 Water Soluble Vitamins questions fully solved& updated 2025.
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DTN 240 Chapter 10 Water Soluble Vitamins questions fully solved& updated 2025.
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DTN 240 Chapter 10: WaterSoluble Vitamins questions
fully solved& updated 2025
Properties of water soluble vitamins - answer -not stored in the
body; excreted in the urine
-no high risk of toxicity
-easily destroyed by heat, light, pH, or oxidation, or dissolve in
water
absorption of water soluble vitamins - answer Absorbed with water
and enter directly into the bloodstream
Most absorbed in the duodenum and jejunum
Vitamin C functions - answer -antioxidant (can donate or accept
electrons to stabilize free radicals)
-immunity
-collagen
-iron absorption
Vitamin C RDA - answer Men: 90 mg/day
Women: 75 mg/day
Vitamin C food sources - answer citrus fruits are the best, tomatoes,
strawberries, cantaloupe
vitamin C deficiency - answer scurvy
depressed immunity
, scurvy - answer impaired synthesis of collagen
-symptoms: gum and tissue damage in the mouth, poor joint
healing, wounds that wont heal
2000 mg/d - answer What the limit of vitamin C intake?
toxicity symptoms of vit C - answer nausea, stomach cramps,
diarrhea, kidney stones
common cold - answer What is prevented with a mega dose of
vitamin C?
coenzymes - answer B vitamins serve as?
energy metabolism reactions - answer B vitamins are needed for?
8 - answer how many B vitamins are there?
thiamin functions - answer -coenzyme in CHO and BCAA metabolism
thiamin pyrophosphate
-helps convert pyruvate to acetyl CoA
-helpful for nerve conduction and neurotransmitter synthesis
thiamin food sources - answer Enriched, fortified, or whole grain
products; pork, legumes, seeds, nuts
Thiamin deficiency - answer Beriberi and Wernicke-Korsakoff
syndrome
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