Nucleoside is made up of ribose sugar and nitrogenous base only. Uracil forms nucleoside with only ribose sugar. So, the option with category nucleoside component uracil is correct. 
Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component X in it 

Held on 30 Apr 2012 · Verified 9 Jul 2026.
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(b)
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Which of the following graphs depicts the effect of substrate concentration on velocity of enzyme catalysed reaction?
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