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* vitamins
 #133413  
  saonew - 10/29/06 01:02
 
  Which of the following statements regarding vitamins is true?

A. Wernicke’s encephalopathy is due to a riboflavin deficiency in alcoholics.

B. Niacin is produced from tryptophan by the body.

C. Avidin, a protein found in raw egg white, binds folate tightly and will prevent its absorption from the gut.

D. Alcoholics cannot absorb folate from the diet because the cirrhotic liver cannot polyglutamylate it.

E. Cobalamin is absorbed in the stomach where it binds to a glycoprotein, the intrinsic factor.

 
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* Re:vitamins
#534244
  coolzone - 10/29/06 15:22
 
  ANS. B  
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* Re:vitamins
#534275
  vjain03 - 10/29/06 15:41
 
  Ans B

Tryptophan metabolism gives rise to Niacin in body. I believe best way to remember this is as follows: In carcinoid syndrome there is Pellagra-like features(the 3 Ds) bcoz Tryptophan is converted to serotonin (5-OH Tryptamine) and therefore a state of Niacin def occurs.
 
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* Re:vitamins
#534553
  indidoc - 10/29/06 20:24
 
  BBBB  
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* Re:vitamins
#538737
  cpa - 11/01/06 03:05
 
  bb  
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