FIX THIS:Alpha helices are secondary structures characterized by:
Correct answer: A. Intramolecular hydrogen bonds
- A. Intramolecular hydrogen bonds
- B. Disulphide bonds
- C. A rippled effect
- D. Intermolecular hydrogen bonds
Explanation
Option A is correct because alpha helices are stabilized by intramolecular hydrogen bonds between the carbonyl oxygen of one amino acid and the amide hydrogen of another amino acid, forming a helical structure in proteins.
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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