Which of the following describes a peptide bond?
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An ionic bond between two amino acids
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A covalent bond between a carboxyl group and an amino group
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A hydrogen bond between sugar molecules
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A double bond between carbon atoms in a lipid
📝 Detailed explanation
Peptide bonds (-CO-NH-) form via a condensation reaction between the amino group of one amino acid and the carboxyl group of another.
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