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Questions and Answers
Which of the following best describes vitamins?
What was the term 'vitamine' coined from?
How are fat-soluble vitamins handled in the body?
Why do water-soluble vitamins not accumulate to toxic levels in the body?
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What distinguishes fat-soluble vitamins from water-soluble vitamins in terms of solubility?
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Study Notes
Vitamins Overview
- Vitamins are essential nutrients required in small quantities for various physiological functions.
Origin of the Term 'Vitamine'
- The term 'vitamine' was coined by Polish biochemist Casimir Funk in 1912, derived from the Latin 'vita' (life) and 'amine' (amino acid).
Fat-Soluble Vitamins
- Fat-soluble vitamins are stored in the liver and fatty tissues, allowing for a buffer against deficiency but also increasing the risk of toxicity.
- These vitamins are absorbed into the bloodstream with the help of bile salts.
Water-Soluble Vitamins
- Water-soluble vitamins are not stored in the body and excess amounts are excreted in urine, preventing toxic accumulation.
- These vitamins are not stored in the body because they can be excreted through the kidneys.
Key Differences Between Fat-Soluble and Water-Soluble Vitamins
- Fat-soluble vitamins (A, D, E, and K) are soluble in lipids and can accumulate in the body, potentially leading to toxicity.
- Water-soluble vitamins (B and C) are soluble in water and excess amounts are excreted in the urine.
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Description
This biochemistry quiz covers the fundamentals of fat-soluble and water-soluble vitamins, their comparison, actions, sources, and signs of deficiencies. The lecture aims to enhance understanding of these essential organic compounds.
