BIOL 221 Lecture Notes - Lecture 9: Vitamin K, Riboflavin, Niacin
3 Mar 2020
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Document Summary
Riboflavin and niacin form part of electron carriers (fad and nad+) They perform many essential functions in the body. For example, riboflavin and niacin form part of the electron. , respectively, that carry electrons during carriers fad and nad+ glycolysis and aerobic respiration. Vitamins a, c and e are important antioxidants that protect cells from the effects of free radicals whose unpaired valence electrons are highly reactive (they steal electrons from other molecules thereby oxidizing those molecules). Damage occurs as free radicals interact with dna or the cell membrane. Vitamins that act as antioxidants can safely interact with free radicals thereby protecting the dna and other essential cellular compounds. Other important functions of vitamins includes forming visual proteins most of which are based on vitamin a. Vitamin d is essential to calcium absorption within the small intestine and reabsorption in the kidneys. D begins in the skin and is completed in the kidneys.
