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#Question id: 667


Which represents the backbone of a protein?

Note: R = amino acid side chain

N = nitrogen

Cα = alpha carbon

C = carbonyl carbon

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. R1R2R3R4R5    

  2. repeating units of N-C

  3. repeating units of N-Cα-C  

  4. repeating units of Cα-C


Answer:- Option(s): 3


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