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Protein are nitrogeneous organic compound having very high molecular mass. They are polyamides formed from `alpha`-amino acid. The bond formed between two amino acid is called peptide bond `-underset(O) underset(||)C-NH-`. The product obtainded by this peptide bond formation are called peptide and they may be divided as di, tri ,tetra, penta peptide. Which statement are correct about peptide bond? 1. `-overset(O)overset(||)C-NH-` group is planar. 2. `C-N` bond length in protein is longer than usual bond length of `C-N` bond. 3. `C-N` bond length in protein is samller than usual bond length of `C-N` bondA. 2 and 3B. 1 and 2C. 2 onlyD. 1 and 3

Answer» Correct Answer - D


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