Q91 / 180 · AIIMS 2002 · Chemistry

The vitamin nicotinamide can be synthesized in our body from

A
tyrosine
Correct answer
B
tryptophan
C
valine
D
phenylalanine.

Solution

The amino acid tryptophan serves as a source material for the synthesis of nicotinamide which in turn forms two coenzymes NAD and NADP with metabolic roles.

Hence, the correct answer is option: 'B'.

Relevant Questions

Assertion : Insulin is water soluble. Reason: Insulin is a globular protein.2014Proteins
Assertion : All enzymes are made up of proteins and all proteins have three dimensional structures. Reason : Secondary structures of protein2013Proteins
Assertion : -pleated sheet structure of protein shows maximum extension. Reason : Intermolecular hydrogen bonding is present in them.2011Proteins
Assertion : Millon's test is a test for identification of proteins. Reason : Millon's reagent is a solution of mercurous nitrate and mercuri2009Proteins
The pair in which both species have iron is2006Proteins
Which one of the following biomolecules is insoluble in water?2005Proteins