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Questions and Answers
Which type of bond is responsible for the free rotation between the alpha-carbon and the amino nitrogen in an amino acid residue?
Which type of bond is responsible for the free rotation between the alpha-carbon and the amino nitrogen in an amino acid residue?
- Hydrogen bond
- Ionic bond
- Peptide bond
- Covalent bond (correct)
Which regular structure can a polypeptide chain fold into?
Which regular structure can a polypeptide chain fold into?
- Loops
- Turns
- Beta-pleated sheet (correct)
- Alpha helix
What is the local arrangement of the backbone of a polypeptide chain that is hydrogen-bonded?
What is the local arrangement of the backbone of a polypeptide chain that is hydrogen-bonded?
- Loops
- Turns (correct)
- Alpha helix
- Beta-pleated sheet
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Study Notes
Bonding in Amino Acid Residues
- The single bond between the alpha-carbon and the amino nitrogen is responsible for the free rotation in an amino acid residue.
Polypeptide Chain Structure
- A polypeptide chain can fold into an alpha-helix, a regular structure.
Polypeptide Backbone Arrangement
- The local arrangement of the backbone of a polypeptide chain is an alpha-helix, which is hydrogen-bonded.
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